20740923

素因数分解:

$3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{821}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 34366176

約数和(自身を除く): 13625253

約数列:

[1, 3, 7, 9, 21, 63, 401, 821, 1203, 2463, 2807, 3609, 5747, 7389, 8421, 17241, 25263, 51723, 329221, 987663, 2304547, 2962989, 6913641, 20740923]

約数ペア:

[(1, 20740923), (3, 6913641), (7, 2962989), (9, 2304547), (21, 987663), (63, 329221), (401, 51723), (821, 25263), (1203, 17241), (2463, 8421), (2807, 7389), (3609, 5747)]