21196071

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{6247}}^1$

素因数の和:6295

約数の個数: 24

約数和(自身を含む): 34114080

約数和(自身を除く): 12918009

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 6247, 18741, 56223, 81211, 181163, 243633, 543489, 730899, 1630467, 2355119, 7065357, 21196071]

約数ペア:

[(1, 21196071), (3, 7065357), (9, 2355119), (13, 1630467), (29, 730899), (39, 543489), (87, 243633), (117, 181163), (261, 81211), (377, 56223), (1131, 18741), (3393, 6247)]