391251

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 16

約数和(自身を含む): 616448

約数和(自身を除く): 225197

約数列:

[1, 3, 7, 21, 31, 93, 217, 601, 651, 1803, 4207, 12621, 18631, 55893, 130417, 391251]

約数ペア:

[(1, 391251), (3, 130417), (7, 55893), (21, 18631), (31, 12621), (93, 4207), (217, 1803), (601, 651)]