21985956

素因数分解:

$2^2\times 3^2\times {\mathrm{610721}}^1$

素因数の和:610731

約数の個数: 18

約数和(自身を含む): 55575702

約数和(自身を除く): 33589746

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610721, 1221442, 1832163, 2442884, 3664326, 5496489, 7328652, 10992978, 21985956]

約数ペア:

[(1, 21985956), (2, 10992978), (3, 7328652), (4, 5496489), (6, 3664326), (9, 2442884), (12, 1832163), (18, 1221442), (36, 610721)]