87920020

素因数分解:

$2^2\times 5^1\times {\mathrm{4396001}}^1$

素因数の和:4396010

約数の個数: 12

約数和(自身を含む): 184632084

約数和(自身を除く): 96712064

約数列:

[1, 2, 4, 5, 10, 20, 4396001, 8792002, 17584004, 21980005, 43960010, 87920020]

約数ペア:

[(1, 87920020), (2, 43960010), (4, 21980005), (5, 17584004), (10, 8792002), (20, 4396001)]