20387547

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{379}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 30430400

約数和(自身を除く): 10042853

約数列:

[1, 3, 9, 43, 129, 139, 379, 387, 417, 1137, 1251, 3411, 5977, 16297, 17931, 48891, 52681, 53793, 146673, 158043, 474129, 2265283, 6795849, 20387547]

約数ペア:

[(1, 20387547), (3, 6795849), (9, 2265283), (43, 474129), (129, 158043), (139, 146673), (379, 53793), (387, 52681), (417, 48891), (1137, 17931), (1251, 16297), (3411, 5977)]