81207511

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{887}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 107412480

約数和(自身を除く): 26204969

約数列:

[1, 7, 11, 29, 41, 77, 203, 287, 319, 451, 887, 1189, 2233, 3157, 6209, 8323, 9757, 13079, 25723, 36367, 68299, 91553, 180061, 254569, 282953, 400037, 1054643, 1980671, 2800259, 7382501, 11601073, 81207511]

約数ペア:

[(1, 81207511), (7, 11601073), (11, 7382501), (29, 2800259), (41, 1980671), (77, 1054643), (203, 400037), (287, 282953), (319, 254569), (451, 180061), (887, 91553), (1189, 68299), (2233, 36367), (3157, 25723), (6209, 13079), (8323, 9757)]