257164414

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139309}}^1$

素因数の和:139395

約数の個数: 16

約数和(自身を含む): 421273440

約数和(自身を除く): 164109026

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 139309, 278618, 1811017, 3622034, 9890939, 19781878, 128582207, 257164414]

約数ペア:

[(1, 257164414), (2, 128582207), (13, 19781878), (26, 9890939), (71, 3622034), (142, 1811017), (923, 278618), (1846, 139309)]