40820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 92904

約数和(自身を除く): 52084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 628, 785, 1570, 2041, 3140, 4082, 8164, 10205, 20410, 40820]

約数ペア:

[(1, 40820), (2, 20410), (4, 10205), (5, 8164), (10, 4082), (13, 3140), (20, 2041), (26, 1570), (52, 785), (65, 628), (130, 314), (157, 260)]