21215180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151537}}^1$

素因数の和:151553

約数の個数: 24

約数和(自身を含む): 50916768

約数和(自身を除く): 29701588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151537, 303074, 606148, 757685, 1060759, 1515370, 2121518, 3030740, 4243036, 5303795, 10607590, 21215180]

約数ペア:

[(1, 21215180), (2, 10607590), (4, 5303795), (5, 4243036), (7, 3030740), (10, 2121518), (14, 1515370), (20, 1060759), (28, 757685), (35, 606148), (70, 303074), (140, 151537)]