20698240

素因数分解:

$2^7\times 5^1\times {\mathrm{32341}}^1$

素因数の和:32360

約数の個数: 32

約数和(自身を含む): 49483260

約数和(自身を除く): 28785020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32341, 64682, 129364, 161705, 258728, 323410, 517456, 646820, 1034912, 1293640, 2069824, 2587280, 4139648, 5174560, 10349120, 20698240]

約数ペア:

[(1, 20698240), (2, 10349120), (4, 5174560), (5, 4139648), (8, 2587280), (10, 2069824), (16, 1293640), (20, 1034912), (32, 646820), (40, 517456), (64, 323410), (80, 258728), (128, 161705), (160, 129364), (320, 64682), (640, 32341)]