77779990

素因数分解:

$2^1\times 5^1\times {\mathrm{2551}}^1\times {\mathrm{3049}}^1$

素因数の和:5607

約数の個数: 16

約数和(自身を含む): 140104800

約数和(自身を除く): 62324810

約数列:

[1, 2, 5, 10, 2551, 3049, 5102, 6098, 12755, 15245, 25510, 30490, 7777999, 15555998, 38889995, 77779990]

約数ペア:

[(1, 77779990), (2, 38889995), (5, 15555998), (10, 7777999), (2551, 30490), (3049, 25510), (5102, 15245), (6098, 12755)]