21085028

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{443}}^1$

素因数の和:683

約数の個数: 24

約数和(自身を含む): 37718688

約数和(自身を除く): 16633660

約数列:

[1, 2, 4, 73, 146, 163, 292, 326, 443, 652, 886, 1772, 11899, 23798, 32339, 47596, 64678, 72209, 129356, 144418, 288836, 5271257, 10542514, 21085028]

約数ペア:

[(1, 21085028), (2, 10542514), (4, 5271257), (73, 288836), (146, 144418), (163, 129356), (292, 72209), (326, 64678), (443, 47596), (652, 32339), (886, 23798), (1772, 11899)]