18798040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8867}}^1$

素因数の和:8931

約数の個数: 32

約数和(自身を含む): 43098480

約数和(自身を除く): 24300440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8867, 17734, 35468, 44335, 70936, 88670, 177340, 354680, 469951, 939902, 1879804, 2349755, 3759608, 4699510, 9399020, 18798040]

約数ペア:

[(1, 18798040), (2, 9399020), (4, 4699510), (5, 3759608), (8, 2349755), (10, 1879804), (20, 939902), (40, 469951), (53, 354680), (106, 177340), (212, 88670), (265, 70936), (424, 44335), (530, 35468), (1060, 17734), (2120, 8867)]