19818580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24169}}^1$

素因数の和:24219

約数の個数: 24

約数和(自身を含む): 42635880

約数和(自身を除く): 22817300

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24169, 48338, 96676, 120845, 241690, 483380, 990929, 1981858, 3963716, 4954645, 9909290, 19818580]

約数ペア:

[(1, 19818580), (2, 9909290), (4, 4954645), (5, 3963716), (10, 1981858), (20, 990929), (41, 483380), (82, 241690), (164, 120845), (205, 96676), (410, 48338), (820, 24169)]