21020710

素因数分解:

$2^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{13921}}^1$

素因数の和:14079

約数の個数: 16

約数和(自身を含む): 38090592

約数和(自身を除く): 17069882

約数列:

[1, 2, 5, 10, 151, 302, 755, 1510, 13921, 27842, 69605, 139210, 2102071, 4204142, 10510355, 21020710]

約数ペア:

[(1, 21020710), (2, 10510355), (5, 4204142), (10, 2102071), (151, 139210), (302, 69605), (755, 27842), (1510, 13921)]