64890040

素因数分解:

$2^3\times 5^1\times {\mathrm{757}}^1\times {\mathrm{2143}}^1$

素因数の和:2911

約数の個数: 32

約数和(自身を含む): 146263680

約数和(自身を除く): 81373640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 757, 1514, 2143, 3028, 3785, 4286, 6056, 7570, 8572, 10715, 15140, 17144, 21430, 30280, 42860, 85720, 1622251, 3244502, 6489004, 8111255, 12978008, 16222510, 32445020, 64890040]

約数ペア:

[(1, 64890040), (2, 32445020), (4, 16222510), (5, 12978008), (8, 8111255), (10, 6489004), (20, 3244502), (40, 1622251), (757, 85720), (1514, 42860), (2143, 30280), (3028, 21430), (3785, 17144), (4286, 15140), (6056, 10715), (7570, 8572)]