21111435

素因数分解:

$3^4\times 5^1\times {\mathrm{52127}}^1$

素因数の和:52144

約数の個数: 20

約数和(自身を含む): 37844928

約数和(自身を除く): 16733493

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52127, 156381, 260635, 469143, 781905, 1407429, 2345715, 4222287, 7037145, 21111435]

約数ペア:

[(1, 21111435), (3, 7037145), (5, 4222287), (9, 2345715), (15, 1407429), (27, 781905), (45, 469143), (81, 260635), (135, 156381), (405, 52127)]