21271790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73351}}^1$

素因数の和:73387

約数の個数: 16

約数和(自身を含む): 39610080

約数和(自身を除く): 18338290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73351, 146702, 366755, 733510, 2127179, 4254358, 10635895, 21271790]

約数ペア:

[(1, 21271790), (2, 10635895), (5, 4254358), (10, 2127179), (29, 733510), (58, 366755), (145, 146702), (290, 73351)]