21151818

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{28661}}^1$

素因数の和:28710

約数の個数: 24

約数和(自身を含む): 46948356

約数和(自身を除く): 25796538

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 28661, 57322, 85983, 171966, 257949, 515898, 1175101, 2350202, 3525303, 7050606, 10575909, 21151818]

約数ペア:

[(1, 21151818), (2, 10575909), (3, 7050606), (6, 3525303), (9, 2350202), (18, 1175101), (41, 515898), (82, 257949), (123, 171966), (246, 85983), (369, 57322), (738, 28661)]