261567387

素因数分解:

$3^9\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 399282576

約数和(自身を除く): 137715189

約数列:

[1, 3, 9, 27, 81, 97, 137, 243, 291, 411, 729, 873, 1233, 2187, 2619, 3699, 6561, 7857, 11097, 13289, 19683, 23571, 33291, 39867, 70713, 99873, 119601, 212139, 299619, 358803, 636417, 898857, 1076409, 1909251, 2696571, 3229227, 9687681, 29063043, 87189129, 261567387]

約数ペア:

[(1, 261567387), (3, 87189129), (9, 29063043), (27, 9687681), (81, 3229227), (97, 2696571), (137, 1909251), (243, 1076409), (291, 898857), (411, 636417), (729, 358803), (873, 299619), (1233, 212139), (2187, 119601), (2619, 99873), (3699, 70713), (6561, 39867), (7857, 33291), (11097, 23571), (13289, 19683)]