21670509

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25169}}^1$

素因数の和:25220

約数の個数: 16

約数和(自身を含む): 33828480

約数和(自身を除く): 12157971

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25169, 75507, 176183, 528549, 1031929, 3095787, 7223503, 21670509]

約数ペア:

[(1, 21670509), (3, 7223503), (7, 3095787), (21, 1031929), (41, 528549), (123, 176183), (287, 75507), (861, 25169)]