20602719

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{383}}^1$

素因数の和:571

約数の個数: 24

約数和(自身を含む): 30750720

約数和(自身を除く): 10148001

約数列:

[1, 3, 9, 43, 129, 139, 383, 387, 417, 1149, 1251, 3447, 5977, 16469, 17931, 49407, 53237, 53793, 148221, 159711, 479133, 2289191, 6867573, 20602719]

約数ペア:

[(1, 20602719), (3, 6867573), (9, 2289191), (43, 479133), (129, 159711), (139, 148221), (383, 53793), (387, 53237), (417, 49407), (1149, 17931), (1251, 16469), (3447, 5977)]