181681409

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{4001}}^1$

素因数の和:4520

約数の個数: 16

約数和(自身を含む): 224112000

約数和(自身を除く): 42430591

約数列:

[1, 7, 13, 91, 499, 3493, 4001, 6487, 28007, 45409, 52013, 364091, 1996499, 13975493, 25954487, 181681409]

約数ペア:

[(1, 181681409), (7, 25954487), (13, 13975493), (91, 1996499), (499, 364091), (3493, 52013), (4001, 45409), (6487, 28007)]