21815539204

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{320816753}}^1$

素因数の和:320816774

約数の個数: 12

約数和(自身を含む): 40422911004

約数和(自身を除く): 18607371800

約数列:

[1, 2, 4, 17, 34, 68, 320816753, 641633506, 1283267012, 5453884801, 10907769602, 21815539204]

約数ペア:

[(1, 21815539204), (2, 10907769602), (4, 5453884801), (17, 1283267012), (34, 641633506), (68, 320816753)]