21204001

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{599}}^1$

素因数の和:1008

約数の個数: 16

約数和(自身を含む): 26208000

約数和(自身を除く): 5003999

約数列:

[1, 7, 13, 91, 389, 599, 2723, 4193, 5057, 7787, 35399, 54509, 233011, 1631077, 3029143, 21204001]

約数ペア:

[(1, 21204001), (7, 3029143), (13, 1631077), (91, 233011), (389, 54509), (599, 35399), (2723, 7787), (4193, 5057)]