81237982

素因数分解:

$2^1\times 7^2\times {\mathrm{389}}^1\times {\mathrm{2131}}^1$

素因数の和:2536

約数の個数: 24

約数和(自身を含む): 142183080

約数和(自身を除く): 60945098

約数列:

[1, 2, 7, 14, 49, 98, 389, 778, 2131, 2723, 4262, 5446, 14917, 19061, 29834, 38122, 104419, 208838, 828959, 1657918, 5802713, 11605426, 40618991, 81237982]

約数ペア:

[(1, 81237982), (2, 40618991), (7, 11605426), (14, 5802713), (49, 1657918), (98, 828959), (389, 208838), (778, 104419), (2131, 38122), (2723, 29834), (4262, 19061), (5446, 14917)]