20505664

素因数分解:

$2^6\times {\mathrm{320401}}^1$

素因数の和:320413

約数の個数: 14

約数和(自身を含む): 40691054

約数和(自身を除く): 20185390

約数列:

[1, 2, 4, 8, 16, 32, 64, 320401, 640802, 1281604, 2563208, 5126416, 10252832, 20505664]

約数ペア:

[(1, 20505664), (2, 10252832), (4, 5126416), (8, 2563208), (16, 1281604), (32, 640802), (64, 320401)]