20783980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148457}}^1$

素因数の和:148473

約数の個数: 24

約数和(自身を含む): 49881888

約数和(自身を除く): 29097908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148457, 296914, 593828, 742285, 1039199, 1484570, 2078398, 2969140, 4156796, 5195995, 10391990, 20783980]

約数ペア:

[(1, 20783980), (2, 10391990), (4, 5195995), (5, 4156796), (7, 2969140), (10, 2078398), (14, 1484570), (20, 1039199), (28, 742285), (35, 593828), (70, 296914), (140, 148457)]