81563524

素因数分解:

$2^2\times 7^1\times {\mathrm{1009}}^1\times {\mathrm{2887}}^1$

素因数の和:3907

約数の個数: 24

約数和(自身を含む): 163345280

約数和(自身を除く): 81781756

約数列:

[1, 2, 4, 7, 14, 28, 1009, 2018, 2887, 4036, 5774, 7063, 11548, 14126, 20209, 28252, 40418, 80836, 2912983, 5825966, 11651932, 20390881, 40781762, 81563524]

約数ペア:

[(1, 81563524), (2, 40781762), (4, 20390881), (7, 11651932), (14, 5825966), (28, 2912983), (1009, 80836), (2018, 40418), (2887, 28252), (4036, 20209), (5774, 14126), (7063, 11548)]