21529780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{16067}}^1$

素因数の和:16143

約数の個数: 24

約数和(自身を含む): 45890208

約数和(自身を除く): 24360428

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 16067, 32134, 64268, 80335, 160670, 321340, 1076489, 2152978, 4305956, 5382445, 10764890, 21529780]

約数ペア:

[(1, 21529780), (2, 10764890), (4, 5382445), (5, 4305956), (10, 2152978), (20, 1076489), (67, 321340), (134, 160670), (268, 80335), (335, 64268), (670, 32134), (1340, 16067)]