20502531

素因数分解:

$3^3\times 7^2\times {\mathrm{15497}}^1$

素因数の和:15520

約数の個数: 24

約数和(自身を含む): 35335440

約数和(自身を除く): 14832909

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15497, 46491, 108479, 139473, 325437, 418419, 759353, 976311, 2278059, 2928933, 6834177, 20502531]

約数ペア:

[(1, 20502531), (3, 6834177), (7, 2928933), (9, 2278059), (21, 976311), (27, 759353), (49, 418419), (63, 325437), (147, 139473), (189, 108479), (441, 46491), (1323, 15497)]