21220255

素因数分解:

$5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1447}}^1$

素因数の和:1878

約数の個数: 16

約数和(自身を含む): 29191680

約数和(自身を除く): 7971425

約数列:

[1, 5, 7, 35, 419, 1447, 2095, 2933, 7235, 10129, 14665, 50645, 606293, 3031465, 4244051, 21220255]

約数ペア:

[(1, 21220255), (5, 4244051), (7, 3031465), (35, 606293), (419, 50645), (1447, 14665), (2095, 10129), (2933, 7235)]