21820615

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{2467}}^1$

素因数の和:2562

約数の個数: 16

約数和(自身を含む): 27542880

約数和(自身を除く): 5722265

約数列:

[1, 5, 29, 61, 145, 305, 1769, 2467, 8845, 12335, 71543, 150487, 357715, 752435, 4364123, 21820615]

約数ペア:

[(1, 21820615), (5, 4364123), (29, 752435), (61, 357715), (145, 150487), (305, 71543), (1769, 12335), (2467, 8845)]