20745360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28813}}^1$

素因数の和:28832

約数の個数: 60

約数和(自身を含む): 69672252

約数和(自身を除く): 48926892

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28813, 57626, 86439, 115252, 144065, 172878, 230504, 259317, 288130, 345756, 432195, 461008, 518634, 576260, 691512, 864390, 1037268, 1152520, 1296585, 1383024, 1728780, 2074536, 2305040, 2593170, 3457560, 4149072, 5186340, 6915120, 10372680, 20745360]

約数ペア:

[(1, 20745360), (2, 10372680), (3, 6915120), (4, 5186340), (5, 4149072), (6, 3457560), (8, 2593170), (9, 2305040), (10, 2074536), (12, 1728780), (15, 1383024), (16, 1296585), (18, 1152520), (20, 1037268), (24, 864390), (30, 691512), (36, 576260), (40, 518634), (45, 461008), (48, 432195), (60, 345756), (72, 288130), (80, 259317), (90, 230504), (120, 172878), (144, 144065), (180, 115252), (240, 86439), (360, 57626), (720, 28813)]