257556

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 655872

約数和(自身を除く): 398316

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 127, 156, 169, 254, 338, 381, 507, 508, 676, 762, 1014, 1524, 1651, 2028, 3302, 4953, 6604, 9906, 19812, 21463, 42926, 64389, 85852, 128778, 257556]

約数ペア:

[(1, 257556), (2, 128778), (3, 85852), (4, 64389), (6, 42926), (12, 21463), (13, 19812), (26, 9906), (39, 6604), (52, 4953), (78, 3302), (127, 2028), (156, 1651), (169, 1524), (254, 1014), (338, 762), (381, 676), (507, 508)]