79999940

素因数分解:

$2^2\times 5^1\times {\mathrm{877}}^1\times {\mathrm{4561}}^1$

素因数の和:5447

約数の個数: 24

約数和(自身を含む): 168228312

約数和(自身を除く): 88228372

約数列:

[1, 2, 4, 5, 10, 20, 877, 1754, 3508, 4385, 4561, 8770, 9122, 17540, 18244, 22805, 45610, 91220, 3999997, 7999994, 15999988, 19999985, 39999970, 79999940]

約数ペア:

[(1, 79999940), (2, 39999970), (4, 19999985), (5, 15999988), (10, 7999994), (20, 3999997), (877, 91220), (1754, 45610), (3508, 22805), (4385, 18244), (4561, 17540), (8770, 9122)]