87212420

素因数分解:

$2^2\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{3301}}^1$

素因数の和:4631

約数の個数: 24

約数和(自身を含む): 183340248

約数和(自身を除く): 96127828

約数列:

[1, 2, 4, 5, 10, 20, 1321, 2642, 3301, 5284, 6602, 6605, 13204, 13210, 16505, 26420, 33010, 66020, 4360621, 8721242, 17442484, 21803105, 43606210, 87212420]

約数ペア:

[(1, 87212420), (2, 43606210), (4, 21803105), (5, 17442484), (10, 8721242), (20, 4360621), (1321, 66020), (2642, 33010), (3301, 26420), (5284, 16505), (6602, 13210), (6605, 13204)]