1817994020

素因数分解:

$2^2\times 5^1\times {\mathrm{90899701}}^1$

素因数の和:90899710

約数の個数: 12

約数和(自身を含む): 3817787484

約数和(自身を除く): 1999793464

約数列:

[1, 2, 4, 5, 10, 20, 90899701, 181799402, 363598804, 454498505, 908997010, 1817994020]

約数ペア:

[(1, 1817994020), (2, 908997010), (4, 454498505), (5, 363598804), (10, 181799402), (20, 90899701)]