81986191

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{13763}}^1$

素因数の和:13830

約数の個数: 16

約数和(自身を含む): 100422144

約数和(自身を除く): 18435953

約数列:

[1, 7, 23, 37, 161, 259, 851, 5957, 13763, 96341, 316549, 509231, 2215843, 3564617, 11712313, 81986191]

約数ペア:

[(1, 81986191), (7, 11712313), (23, 3564617), (37, 2215843), (161, 509231), (259, 316549), (851, 96341), (5957, 13763)]