261304491

素因数分解:

$3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{51631}}^1$

素因数の和:51882

約数の個数: 16

約数和(自身を含む): 399838208

約数和(自身を除く): 138533717

約数列:

[1, 3, 7, 21, 241, 723, 1687, 5061, 51631, 154893, 361417, 1084251, 12443071, 37329213, 87101497, 261304491]

約数ペア:

[(1, 261304491), (3, 87101497), (7, 37329213), (21, 12443071), (241, 1084251), (723, 361417), (1687, 154893), (5061, 51631)]