20015080

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{757}}^1$

素因数の和:1429

約数の個数: 32

約数和(自身を含む): 45161640

約数和(自身を除く): 25146560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 757, 1322, 1514, 2644, 3028, 3305, 3785, 5288, 6056, 6610, 7570, 13220, 15140, 26440, 30280, 500377, 1000754, 2001508, 2501885, 4003016, 5003770, 10007540, 20015080]

約数ペア:

[(1, 20015080), (2, 10007540), (4, 5003770), (5, 4003016), (8, 2501885), (10, 2001508), (20, 1000754), (40, 500377), (661, 30280), (757, 26440), (1322, 15140), (1514, 13220), (2644, 7570), (3028, 6610), (3305, 6056), (3785, 5288)]