19660800000

素因数分解:

$2^{21}\times 3^1\times 5^5$

素因数の和:70

約数の個数: 264

約数和(自身を含む): 65531790072

約数和(自身を除く): 45870990072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 125, 128, 150, 160, 192, 200, 240, 250, 256, 300, 320, 375, 384, 400, 480, 500, 512, 600, 625, 640, 750, 768, 800, 960, 1000, 1024, 1200, 1250, 1280, 1500, 1536, 1600, 1875, 1920, 2000, 2048, 2400, 2500, 2560, 3000, 3072, 3125, 3200, 3750, 3840, 4000, 4096, 4800, 5000, 5120, 6000, 6144, 6250, 6400, 7500, 7680, 8000, 8192, 9375, 9600, 10000, 10240, 12000, 12288, 12500, 12800, 15000, 15360, 16000, 16384, 18750, 19200, 20000, 20480, 24000, 24576, 25000, 25600, 30000, 30720, 32000, 32768, 37500, 38400, 40000, 40960, 48000, 49152, 50000, 51200, 60000, 61440, 64000, 65536, 75000, 76800, 80000, 81920, 96000, 98304, 100000, 102400, 120000, 122880, 128000, 131072, 150000, 153600, 160000, 163840, 192000, 196608, 200000, 204800, 240000, 245760, 256000, 262144, 300000, 307200, 320000, 327680, 384000, 393216, 400000, 409600, 480000, 491520, 512000, 524288, 600000, 614400, 640000, 655360, 768000, 786432, 800000, 819200, 960000, 983040, 1024000, 1048576, 1200000, 1228800, 1280000, 1310720, 1536000, 1572864, 1600000, 1638400, 1920000, 1966080, 2048000, 2097152, 2400000, 2457600, 2560000, 2621440, 3072000, 3145728, 3200000, 3276800, 3840000, 3932160, 4096000, 4800000, 4915200, 5120000, 5242880, 6144000, 6291456, 6400000, 6553600, 7680000, 7864320, 8192000, 9600000, 9830400, 10240000, 10485760, 12288000, 12800000, 13107200, 15360000, 15728640, 16384000, 19200000, 19660800, 20480000, 24576000, 25600000, 26214400, 30720000, 31457280, 32768000, 38400000, 39321600, 40960000, 49152000, 51200000, 52428800, 61440000, 65536000, 76800000, 78643200, 81920000, 98304000, 102400000, 122880000, 131072000, 153600000, 157286400, 163840000, 196608000, 204800000, 245760000, 262144000, 307200000, 327680000, 393216000, 409600000, 491520000, 614400000, 655360000, 786432000, 819200000, 983040000, 1228800000, 1310720000, 1638400000, 1966080000, 2457600000, 3276800000, 3932160000, 4915200000, 6553600000, 9830400000, 19660800000]

約数ペア:

[(1, 19660800000), (2, 9830400000), (3, 6553600000), (4, 4915200000), (5, 3932160000), (6, 3276800000), (8, 2457600000), (10, 1966080000), (12, 1638400000), (15, 1310720000), (16, 1228800000), (20, 983040000), (24, 819200000), (25, 786432000), (30, 655360000), (32, 614400000), (40, 491520000), (48, 409600000), (50, 393216000), (60, 327680000), (64, 307200000), (75, 262144000), (80, 245760000), (96, 204800000), (100, 196608000), (120, 163840000), (125, 157286400), (128, 153600000), (150, 131072000), (160, 122880000), (192, 102400000), (200, 98304000), (240, 81920000), (250, 78643200), (256, 76800000), (300, 65536000), (320, 61440000), (375, 52428800), (384, 51200000), (400, 49152000), (480, 40960000), (500, 39321600), (512, 38400000), (600, 32768000), (625, 31457280), (640, 30720000), (750, 26214400), (768, 25600000), (800, 24576000), (960, 20480000), (1000, 19660800), (1024, 19200000), (1200, 16384000), (1250, 15728640), (1280, 15360000), (1500, 13107200), (1536, 12800000), (1600, 12288000), (1875, 10485760), (1920, 10240000), (2000, 9830400), (2048, 9600000), (2400, 8192000), (2500, 7864320), (2560, 7680000), (3000, 6553600), (3072, 6400000), (3125, 6291456), (3200, 6144000), (3750, 5242880), (3840, 5120000), (4000, 4915200), (4096, 4800000), (4800, 4096000), (5000, 3932160), (5120, 3840000), (6000, 3276800), (6144, 3200000), (6250, 3145728), (6400, 3072000), (7500, 2621440), (7680, 2560000), (8000, 2457600), (8192, 2400000), (9375, 2097152), (9600, 2048000), (10000, 1966080), (10240, 1920000), (12000, 1638400), (12288, 1600000), (12500, 1572864), (12800, 1536000), (15000, 1310720), (15360, 1280000), (16000, 1228800), (16384, 1200000), (18750, 1048576), (19200, 1024000), (20000, 983040), (20480, 960000), (24000, 819200), (24576, 800000), (25000, 786432), (25600, 768000), (30000, 655360), (30720, 640000), (32000, 614400), (32768, 600000), (37500, 524288), (38400, 512000), (40000, 491520), (40960, 480000), (48000, 409600), (49152, 400000), (50000, 393216), (51200, 384000), (60000, 327680), (61440, 320000), (64000, 307200), (65536, 300000), (75000, 262144), (76800, 256000), (80000, 245760), (81920, 240000), (96000, 204800), (98304, 200000), (100000, 196608), (102400, 192000), (120000, 163840), (122880, 160000), (128000, 153600), (131072, 150000)]