20904916

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{3109}}^1$

素因数の和:3195

約数の個数: 18

約数和(自身を含む): 37509710

約数和(自身を除く): 16604794

約数列:

[1, 2, 4, 41, 82, 164, 1681, 3109, 3362, 6218, 6724, 12436, 127469, 254938, 509876, 5226229, 10452458, 20904916]

約数ペア:

[(1, 20904916), (2, 10452458), (4, 5226229), (41, 509876), (82, 254938), (164, 127469), (1681, 12436), (3109, 6724), (3362, 6218)]