81125540

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{17713}}^1$

素因数の和:17951

約数の個数: 24

約数和(自身を含む): 171117240

約数和(自身を除く): 89991700

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 17713, 35426, 70852, 88565, 177130, 354260, 4056277, 8112554, 16225108, 20281385, 40562770, 81125540]

約数ペア:

[(1, 81125540), (2, 40562770), (4, 20281385), (5, 16225108), (10, 8112554), (20, 4056277), (229, 354260), (458, 177130), (916, 88565), (1145, 70852), (2290, 35426), (4580, 17713)]