18720819

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3019}}^1$

素因数の和:3091

約数の個数: 24

約数和(自身を含む): 29680560

約数和(自身を除く): 10959741

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3019, 6201, 9057, 27171, 39247, 117741, 160007, 353223, 480021, 1440063, 2080091, 6240273, 18720819]

約数ペア:

[(1, 18720819), (3, 6240273), (9, 2080091), (13, 1440063), (39, 480021), (53, 353223), (117, 160007), (159, 117741), (477, 39247), (689, 27171), (2067, 9057), (3019, 6201)]