20643231

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5431}}^1$

素因数の和:5622

約数の個数: 16

約数和(自身を含む): 31635968

約数和(自身を除く): 10992737

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5431, 16293, 38017, 114051, 983011, 2949033, 6881077, 20643231]

約数ペア:

[(1, 20643231), (3, 6881077), (7, 2949033), (21, 983011), (181, 114051), (543, 38017), (1267, 16293), (3801, 5431)]