20709988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6529}}^1$

素因数の和:6607

約数の個数: 24

約数和(自身を含む): 39676280

約数和(自身を除く): 18966292

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6529, 13058, 26116, 84877, 169754, 339508, 398269, 796538, 1593076, 5177497, 10354994, 20709988]

約数ペア:

[(1, 20709988), (2, 10354994), (4, 5177497), (13, 1593076), (26, 796538), (52, 398269), (61, 339508), (122, 169754), (244, 84877), (793, 26116), (1586, 13058), (3172, 6529)]