257416621

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{761}}^1$

素因数の和:993

約数の個数: 32

約数和(自身を含む): 337084416

約数和(自身を除く): 79667795

約数列:

[1, 7, 11, 23, 77, 161, 191, 253, 761, 1337, 1771, 2101, 4393, 5327, 8371, 14707, 17503, 30751, 48323, 58597, 122521, 145351, 192533, 338261, 1017457, 1347731, 1598861, 3343073, 11192027, 23401511, 36773803, 257416621]

約数ペア:

[(1, 257416621), (7, 36773803), (11, 23401511), (23, 11192027), (77, 3343073), (161, 1598861), (191, 1347731), (253, 1017457), (761, 338261), (1337, 192533), (1771, 145351), (2101, 122521), (4393, 58597), (5327, 48323), (8371, 30751), (14707, 17503)]