28690180

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{9137}}^1$

素因数の和:9303

約数の個数: 24

約数和(自身を含む): 60639768

約数和(自身を除く): 31949588

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 9137, 18274, 36548, 45685, 91370, 182740, 1434509, 2869018, 5738036, 7172545, 14345090, 28690180]

約数ペア:

[(1, 28690180), (2, 14345090), (4, 7172545), (5, 5738036), (10, 2869018), (20, 1434509), (157, 182740), (314, 91370), (628, 45685), (785, 36548), (1570, 18274), (3140, 9137)]