21489027

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12953}}^1$

素因数の和:13042

約数の個数: 16

約数和(自身を含む): 33162240

約数和(自身を除く): 11673213

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12953, 38859, 90671, 272013, 1023287, 3069861, 7163009, 21489027]

約数ペア:

[(1, 21489027), (3, 7163009), (7, 3069861), (21, 1023287), (79, 272013), (237, 90671), (553, 38859), (1659, 12953)]