20919100

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{3947}}^1$

素因数の和:4014

約数の個数: 36

約数和(自身を含む): 46262664

約数和(自身を除く): 25343564

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 212, 265, 530, 1060, 1325, 2650, 3947, 5300, 7894, 15788, 19735, 39470, 78940, 98675, 197350, 209191, 394700, 418382, 836764, 1045955, 2091910, 4183820, 5229775, 10459550, 20919100]

約数ペア:

[(1, 20919100), (2, 10459550), (4, 5229775), (5, 4183820), (10, 2091910), (20, 1045955), (25, 836764), (50, 418382), (53, 394700), (100, 209191), (106, 197350), (212, 98675), (265, 78940), (530, 39470), (1060, 19735), (1325, 15788), (2650, 7894), (3947, 5300)]