21111165

素因数分解:

$3^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{443}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 37722240

約数和(自身を除く): 16611075

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 353, 443, 1059, 1329, 1765, 2215, 3177, 3987, 5295, 6645, 9531, 11961, 15885, 19935, 47655, 59805, 156379, 469137, 781895, 1407411, 2345685, 4222233, 7037055, 21111165]

約数ペア:

[(1, 21111165), (3, 7037055), (5, 4222233), (9, 2345685), (15, 1407411), (27, 781895), (45, 469137), (135, 156379), (353, 59805), (443, 47655), (1059, 19935), (1329, 15885), (1765, 11961), (2215, 9531), (3177, 6645), (3987, 5295)]