19929980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142357}}^1$

素因数の和:142373

約数の個数: 24

約数和(自身を含む): 47832288

約数和(自身を除く): 27902308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142357, 284714, 569428, 711785, 996499, 1423570, 1992998, 2847140, 3985996, 4982495, 9964990, 19929980]

約数ペア:

[(1, 19929980), (2, 9964990), (4, 4982495), (5, 3985996), (7, 2847140), (10, 1992998), (14, 1423570), (20, 996499), (28, 711785), (35, 569428), (70, 284714), (140, 142357)]