21981130

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{75797}}^1$

素因数の和:75833

約数の個数: 16

約数和(自身を含む): 40930920

約数和(自身を除く): 18949790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 75797, 151594, 378985, 757970, 2198113, 4396226, 10990565, 21981130]

約数ペア:

[(1, 21981130), (2, 10990565), (5, 4396226), (10, 2198113), (29, 757970), (58, 378985), (145, 151594), (290, 75797)]