21027591

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3391}}^1$

素因数の和:3463

約数の個数: 24

約数和(自身を含む): 33336576

約数和(自身を除く): 12308985

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3391, 6201, 10173, 30519, 44083, 132249, 179723, 396747, 539169, 1617507, 2336399, 7009197, 21027591]

約数ペア:

[(1, 21027591), (3, 7009197), (9, 2336399), (13, 1617507), (39, 539169), (53, 396747), (117, 179723), (159, 132249), (477, 44083), (689, 30519), (2067, 10173), (3391, 6201)]