28459180

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2213}}^1$

素因数の和:2865

約数の個数: 24

約数和(自身を含む): 59884272

約数和(自身を除く): 31425092

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2213, 2572, 3215, 4426, 6430, 8852, 11065, 12860, 22130, 44260, 1422959, 2845918, 5691836, 7114795, 14229590, 28459180]

約数ペア:

[(1, 28459180), (2, 14229590), (4, 7114795), (5, 5691836), (10, 2845918), (20, 1422959), (643, 44260), (1286, 22130), (2213, 12860), (2572, 11065), (3215, 8852), (4426, 6430)]