20189855

素因数分解:

$5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1879}}^1$

素因数の和:2198

約数の個数: 16

約数和(自身を含む): 27793920

約数和(自身を除く): 7604065

約数列:

[1, 5, 7, 35, 307, 1535, 1879, 2149, 9395, 10745, 13153, 65765, 576853, 2884265, 4037971, 20189855]

約数ペア:

[(1, 20189855), (5, 4037971), (7, 2884265), (35, 576853), (307, 65765), (1535, 13153), (1879, 10745), (2149, 9395)]