81506781

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{751}}^1$

素因数の和:1177

約数の個数: 24

約数和(自身を含む): 122004480

約数和(自身を除く): 40497699

約数列:

[1, 3, 9, 31, 93, 279, 389, 751, 1167, 2253, 3501, 6759, 12059, 23281, 36177, 69843, 108531, 209529, 292139, 876417, 2629251, 9056309, 27168927, 81506781]

約数ペア:

[(1, 81506781), (3, 27168927), (9, 9056309), (31, 2629251), (93, 876417), (279, 292139), (389, 209529), (751, 108531), (1167, 69843), (2253, 36177), (3501, 23281), (6759, 12059)]