21871818

素因数分解:

$2^1\times 3^2\times {\mathrm{331}}^1\times {\mathrm{3671}}^1$

素因数の和:4010

約数の個数: 24

約数和(自身を含む): 47545056

約数和(自身を除く): 25673238

約数列:

[1, 2, 3, 6, 9, 18, 331, 662, 993, 1986, 2979, 3671, 5958, 7342, 11013, 22026, 33039, 66078, 1215101, 2430202, 3645303, 7290606, 10935909, 21871818]

約数ペア:

[(1, 21871818), (2, 10935909), (3, 7290606), (6, 3645303), (9, 2430202), (18, 1215101), (331, 66078), (662, 33039), (993, 22026), (1986, 11013), (2979, 7342), (3671, 5958)]