640204800

素因数分解:

$2^{14}\times 3^1\times 5^2\times {\mathrm{521}}^1$

素因数の和:562

約数の個数: 180

約数和(自身を含む): 2120942376

約数和(自身を除く): 1480737576

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, 521, 600, 640, 768, 800, 960, 1024, 1042, 1200, 1280, 1536, 1563, 1600, 1920, 2048, 2084, 2400, 2560, 2605, 3072, 3126, 3200, 3840, 4096, 4168, 4800, 5120, 5210, 6144, 6252, 6400, 7680, 7815, 8192, 8336, 9600, 10240, 10420, 12288, 12504, 12800, 13025, 15360, 15630, 16384, 16672, 19200, 20480, 20840, 24576, 25008, 25600, 26050, 30720, 31260, 33344, 38400, 39075, 40960, 41680, 49152, 50016, 51200, 52100, 61440, 62520, 66688, 76800, 78150, 81920, 83360, 100032, 102400, 104200, 122880, 125040, 133376, 153600, 156300, 166720, 200064, 204800, 208400, 245760, 250080, 266752, 307200, 312600, 333440, 400128, 409600, 416800, 500160, 533504, 614400, 625200, 666880, 800256, 833600, 1000320, 1067008, 1228800, 1250400, 1333760, 1600512, 1667200, 2000640, 2134016, 2500800, 2667520, 3201024, 3334400, 4001280, 4268032, 5001600, 5335040, 6402048, 6668800, 8002560, 8536064, 10003200, 10670080, 12804096, 13337600, 16005120, 20006400, 21340160, 25608192, 26675200, 32010240, 40012800, 42680320, 53350400, 64020480, 80025600, 106700800, 128040960, 160051200, 213401600, 320102400, 640204800]

約数ペア:

[(1, 640204800), (2, 320102400), (3, 213401600), (4, 160051200), (5, 128040960), (6, 106700800), (8, 80025600), (10, 64020480), (12, 53350400), (15, 42680320), (16, 40012800), (20, 32010240), (24, 26675200), (25, 25608192), (30, 21340160), (32, 20006400), (40, 16005120), (48, 13337600), (50, 12804096), (60, 10670080), (64, 10003200), (75, 8536064), (80, 8002560), (96, 6668800), (100, 6402048), (120, 5335040), (128, 5001600), (150, 4268032), (160, 4001280), (192, 3334400), (200, 3201024), (240, 2667520), (256, 2500800), (300, 2134016), (320, 2000640), (384, 1667200), (400, 1600512), (480, 1333760), (512, 1250400), (521, 1228800), (600, 1067008), (640, 1000320), (768, 833600), (800, 800256), (960, 666880), (1024, 625200), (1042, 614400), (1200, 533504), (1280, 500160), (1536, 416800), (1563, 409600), (1600, 400128), (1920, 333440), (2048, 312600), (2084, 307200), (2400, 266752), (2560, 250080), (2605, 245760), (3072, 208400), (3126, 204800), (3200, 200064), (3840, 166720), (4096, 156300), (4168, 153600), (4800, 133376), (5120, 125040), (5210, 122880), (6144, 104200), (6252, 102400), (6400, 100032), (7680, 83360), (7815, 81920), (8192, 78150), (8336, 76800), (9600, 66688), (10240, 62520), (10420, 61440), (12288, 52100), (12504, 51200), (12800, 50016), (13025, 49152), (15360, 41680), (15630, 40960), (16384, 39075), (16672, 38400), (19200, 33344), (20480, 31260), (20840, 30720), (24576, 26050), (25008, 25600)]