20811843

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{4561}}^1$

素因数の和:4596

約数の個数: 24

約数和(自身を含む): 33393840

約数和(自身を除く): 12581997

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 351, 507, 1521, 4561, 4563, 13683, 41049, 59293, 123147, 177879, 533637, 770809, 1600911, 2312427, 6937281, 20811843]

約数ペア:

[(1, 20811843), (3, 6937281), (9, 2312427), (13, 1600911), (27, 770809), (39, 533637), (117, 177879), (169, 123147), (351, 59293), (507, 41049), (1521, 13683), (4561, 4563)]