662540

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 1406832

約数和(自身を除く): 744292

約数列:

[1, 2, 4, 5, 10, 20, 157, 211, 314, 422, 628, 785, 844, 1055, 1570, 2110, 3140, 4220, 33127, 66254, 132508, 165635, 331270, 662540]

約数ペア:

[(1, 662540), (2, 331270), (4, 165635), (5, 132508), (10, 66254), (20, 33127), (157, 4220), (211, 3140), (314, 2110), (422, 1570), (628, 1055), (785, 844)]