20702740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13103}}^1$

素因数の和:13191

約数の個数: 24

約数和(自身を含む): 44029440

約数和(自身を除く): 23326700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13103, 26206, 52412, 65515, 131030, 262060, 1035137, 2070274, 4140548, 5175685, 10351370, 20702740]

約数ペア:

[(1, 20702740), (2, 10351370), (4, 5175685), (5, 4140548), (10, 2070274), (20, 1035137), (79, 262060), (158, 131030), (316, 65515), (395, 52412), (790, 26206), (1580, 13103)]