20698120

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{929}}^1$

素因数の和:1497

約数の個数: 32

約数和(自身を含む): 46704600

約数和(自身を除く): 26006480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 929, 1114, 1858, 2228, 2785, 3716, 4456, 4645, 5570, 7432, 9290, 11140, 18580, 22280, 37160, 517453, 1034906, 2069812, 2587265, 4139624, 5174530, 10349060, 20698120]

約数ペア:

[(1, 20698120), (2, 10349060), (4, 5174530), (5, 4139624), (8, 2587265), (10, 2069812), (20, 1034906), (40, 517453), (557, 37160), (929, 22280), (1114, 18580), (1858, 11140), (2228, 9290), (2785, 7432), (3716, 5570), (4456, 4645)]