81221954

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2749}}^1$

素因数の和:2858

約数の個数: 32

約数和(自身を含む): 142560000

約数和(自身を除く): 61338046

約数列:

[1, 2, 11, 17, 22, 34, 79, 158, 187, 374, 869, 1343, 1738, 2686, 2749, 5498, 14773, 29546, 30239, 46733, 60478, 93466, 217171, 434342, 514063, 1028126, 2388881, 3691907, 4777762, 7383814, 40610977, 81221954]

約数ペア:

[(1, 81221954), (2, 40610977), (11, 7383814), (17, 4777762), (22, 3691907), (34, 2388881), (79, 1028126), (158, 514063), (187, 434342), (374, 217171), (869, 93466), (1343, 60478), (1738, 46733), (2686, 30239), (2749, 29546), (5498, 14773)]