15621417

素因数分解:

$3^4\times 7^1\times {\mathrm{27551}}^1$

素因数の和:27570

約数の個数: 20

約数和(自身を含む): 26670336

約数和(自身を除く): 11048919

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 27551, 82653, 192857, 247959, 578571, 743877, 1735713, 2231631, 5207139, 15621417]

約数ペア:

[(1, 15621417), (3, 5207139), (7, 2231631), (9, 1735713), (21, 743877), (27, 578571), (63, 247959), (81, 192857), (189, 82653), (567, 27551)]