208631409

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:845

約数の個数: 32

約数和(自身を含む): 323321856

約数和(自身を除く): 114690447

約数列:

[1, 3, 7, 21, 127, 137, 381, 411, 571, 889, 959, 1713, 2667, 2877, 3997, 11991, 17399, 52197, 72517, 78227, 121793, 217551, 234681, 365379, 507619, 547589, 1522857, 1642767, 9934829, 29804487, 69543803, 208631409]

約数ペア:

[(1, 208631409), (3, 69543803), (7, 29804487), (21, 9934829), (127, 1642767), (137, 1522857), (381, 547589), (411, 507619), (571, 365379), (889, 234681), (959, 217551), (1713, 121793), (2667, 78227), (2877, 72517), (3997, 52197), (11991, 17399)]