20539281

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8219}}^1$

素因数の和:8253

約数の個数: 24

約数和(自身を含む): 33734880

約数和(自身を除く): 13195599

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8219, 24657, 57533, 139723, 172599, 402731, 419169, 978061, 1208193, 2934183, 6846427, 20539281]

約数ペア:

[(1, 20539281), (3, 6846427), (7, 2934183), (17, 1208193), (21, 978061), (49, 419169), (51, 402731), (119, 172599), (147, 139723), (357, 57533), (833, 24657), (2499, 8219)]