81321338

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{4243}}^1$

素因数の和:4326

約数の個数: 24

約数和(自身を含む): 143311392

約数和(自身を除く): 61990054

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 1369, 2738, 4243, 8486, 9583, 19166, 29701, 59402, 156991, 313982, 1098937, 2197874, 5808667, 11617334, 40660669, 81321338]

約数ペア:

[(1, 81321338), (2, 40660669), (7, 11617334), (14, 5808667), (37, 2197874), (74, 1098937), (259, 313982), (518, 156991), (1369, 59402), (2738, 29701), (4243, 19166), (8486, 9583)]