28756790

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 53136000

約数和(自身を除く): 24379210

約数列:

[1, 2, 5, 10, 79, 89, 158, 178, 395, 409, 445, 790, 818, 890, 2045, 4090, 7031, 14062, 32311, 35155, 36401, 64622, 70310, 72802, 161555, 182005, 323110, 364010, 2875679, 5751358, 14378395, 28756790]

約数ペア:

[(1, 28756790), (2, 14378395), (5, 5751358), (10, 2875679), (79, 364010), (89, 323110), (158, 182005), (178, 161555), (395, 72802), (409, 70310), (445, 64622), (790, 36401), (818, 35155), (890, 32311), (2045, 14062), (4090, 7031)]