20156871

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{571}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 31537792

約数和(自身を除く): 11380921

約数列:

[1, 3, 7, 21, 41, 123, 287, 571, 861, 1681, 1713, 3997, 5043, 11767, 11991, 23411, 35301, 70233, 163877, 491631, 959851, 2879553, 6718957, 20156871]

約数ペア:

[(1, 20156871), (3, 6718957), (7, 2879553), (21, 959851), (41, 491631), (123, 163877), (287, 70233), (571, 35301), (861, 23411), (1681, 11991), (1713, 11767), (3997, 5043)]