191520260

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 408844800

約数和(自身を除く): 217324540

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 239, 389, 412, 478, 515, 778, 956, 1030, 1195, 1556, 1945, 2060, 2390, 3890, 4780, 7780, 24617, 40067, 49234, 80134, 92971, 98468, 123085, 160268, 185942, 200335, 246170, 371884, 400670, 464855, 492340, 801340, 929710, 1859420, 9576013, 19152026, 38304052, 47880065, 95760130, 191520260]

約数ペア:

[(1, 191520260), (2, 95760130), (4, 47880065), (5, 38304052), (10, 19152026), (20, 9576013), (103, 1859420), (206, 929710), (239, 801340), (389, 492340), (412, 464855), (478, 400670), (515, 371884), (778, 246170), (956, 200335), (1030, 185942), (1195, 160268), (1556, 123085), (1945, 98468), (2060, 92971), (2390, 80134), (3890, 49234), (4780, 40067), (7780, 24617)]