20394549

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2549}}^1$

素因数の和:2689

約数の個数: 24

約数和(自身を含む): 33945600

約数和(自身を除く): 13551051

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2549, 2667, 7647, 8001, 17843, 22941, 53529, 160587, 323723, 971169, 2266061, 2913507, 6798183, 20394549]

約数ペア:

[(1, 20394549), (3, 6798183), (7, 2913507), (9, 2266061), (21, 971169), (63, 323723), (127, 160587), (381, 53529), (889, 22941), (1143, 17843), (2549, 8001), (2667, 7647)]