28005550

素因数分解:

$2^1\times 5^2\times {\mathrm{311}}^1\times {\mathrm{1801}}^1$

素因数の和:2124

約数の個数: 24

約数和(自身を含む): 52286832

約数和(自身を除く): 24281282

約数列:

[1, 2, 5, 10, 25, 50, 311, 622, 1555, 1801, 3110, 3602, 7775, 9005, 15550, 18010, 45025, 90050, 560111, 1120222, 2800555, 5601110, 14002775, 28005550]

約数ペア:

[(1, 28005550), (2, 14002775), (5, 5601110), (10, 2800555), (25, 1120222), (50, 560111), (311, 90050), (622, 45025), (1555, 18010), (1801, 15550), (3110, 9005), (3602, 7775)]