19725381

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3181}}^1$

素因数の和:3253

約数の個数: 24

約数和(自身を含む): 31272696

約数和(自身を除く): 11547315

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 3181, 6201, 9543, 28629, 41353, 124059, 168593, 372177, 505779, 1517337, 2191709, 6575127, 19725381]

約数ペア:

[(1, 19725381), (3, 6575127), (9, 2191709), (13, 1517337), (39, 505779), (53, 372177), (117, 168593), (159, 124059), (477, 41353), (689, 28629), (2067, 9543), (3181, 6201)]