20944040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40277}}^1$

素因数の和:40301

約数の個数: 32

約数和(自身を含む): 50750280

約数和(自身を除く): 29806240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40277, 80554, 161108, 201385, 322216, 402770, 523601, 805540, 1047202, 1611080, 2094404, 2618005, 4188808, 5236010, 10472020, 20944040]

約数ペア:

[(1, 20944040), (2, 10472020), (4, 5236010), (5, 4188808), (8, 2618005), (10, 2094404), (13, 1611080), (20, 1047202), (26, 805540), (40, 523601), (52, 402770), (65, 322216), (104, 201385), (130, 161108), (260, 80554), (520, 40277)]