19660800

素因数分解:

$2^{18}\times 3^1\times 5^2$

素因数の和:49

約数の個数: 114

約数和(自身を含む): 65011588

約数和(自身を除く): 45350788

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, 128, 150, 160, 192, 200, 240, 256, 300, 320, 384, 400, 480, 512, 600, 640, 768, 800, 960, 1024, 1200, 1280, 1536, 1600, 1920, 2048, 2400, 2560, 3072, 3200, 3840, 4096, 4800, 5120, 6144, 6400, 7680, 8192, 9600, 10240, 12288, 12800, 15360, 16384, 19200, 20480, 24576, 25600, 30720, 32768, 38400, 40960, 49152, 51200, 61440, 65536, 76800, 81920, 98304, 102400, 122880, 131072, 153600, 163840, 196608, 204800, 245760, 262144, 307200, 327680, 393216, 409600, 491520, 614400, 655360, 786432, 819200, 983040, 1228800, 1310720, 1638400, 1966080, 2457600, 3276800, 3932160, 4915200, 6553600, 9830400, 19660800]

約数ペア:

[(1, 19660800), (2, 9830400), (3, 6553600), (4, 4915200), (5, 3932160), (6, 3276800), (8, 2457600), (10, 1966080), (12, 1638400), (15, 1310720), (16, 1228800), (20, 983040), (24, 819200), (25, 786432), (30, 655360), (32, 614400), (40, 491520), (48, 409600), (50, 393216), (60, 327680), (64, 307200), (75, 262144), (80, 245760), (96, 204800), (100, 196608), (120, 163840), (128, 153600), (150, 131072), (160, 122880), (192, 102400), (200, 98304), (240, 81920), (256, 76800), (300, 65536), (320, 61440), (384, 51200), (400, 49152), (480, 40960), (512, 38400), (600, 32768), (640, 30720), (768, 25600), (800, 24576), (960, 20480), (1024, 19200), (1200, 16384), (1280, 15360), (1536, 12800), (1600, 12288), (1920, 10240), (2048, 9600), (2400, 8192), (2560, 7680), (3072, 6400), (3200, 6144), (3840, 5120), (4096, 4800)]