258136907

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 323604480

約数和(自身を除く): 65467573

約数列:

[1, 7, 19, 31, 133, 137, 217, 457, 589, 959, 2603, 3199, 4123, 4247, 8683, 14167, 18221, 29729, 60781, 62609, 80693, 99169, 269173, 438263, 564851, 1189571, 1884211, 1940879, 8326997, 13586153, 36876701, 258136907]

約数ペア:

[(1, 258136907), (7, 36876701), (19, 13586153), (31, 8326997), (133, 1940879), (137, 1884211), (217, 1189571), (457, 564851), (589, 438263), (959, 269173), (2603, 99169), (3199, 80693), (4123, 62609), (4247, 60781), (8683, 29729), (14167, 18221)]