21413145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8447}}^1$

素因数の和:8481

約数の個数: 24

約数和(自身を含む): 37103616

約数和(自身を除く): 15690471

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8447, 25341, 42235, 109811, 126705, 329433, 549055, 1427543, 1647165, 4282629, 7137715, 21413145]

約数ペア:

[(1, 21413145), (3, 7137715), (5, 4282629), (13, 1647165), (15, 1427543), (39, 549055), (65, 329433), (169, 126705), (195, 109811), (507, 42235), (845, 25341), (2535, 8447)]