19721143010

素因数分解:

$2^1\times 5^1\times {\mathrm{2543}}^1\times {\mathrm{775507}}^1$

素因数の和:778057

約数の個数: 16

約数和(自身を含む): 35512062336

約数和(自身を除く): 15790919326

約数列:

[1, 2, 5, 10, 2543, 5086, 12715, 25430, 775507, 1551014, 3877535, 7755070, 1972114301, 3944228602, 9860571505, 19721143010]

約数ペア:

[(1, 19721143010), (2, 9860571505), (5, 3944228602), (10, 1972114301), (2543, 7755070), (5086, 3877535), (12715, 1551014), (25430, 775507)]