20254390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{449}}^1$

素因数の和:816

約数の個数: 32

約数和(自身を含む): 39463200

約数和(自身を除く): 19208810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 347, 449, 694, 898, 1735, 2245, 3470, 4490, 4511, 5837, 9022, 11674, 22555, 29185, 45110, 58370, 155803, 311606, 779015, 1558030, 2025439, 4050878, 10127195, 20254390]

約数ペア:

[(1, 20254390), (2, 10127195), (5, 4050878), (10, 2025439), (13, 1558030), (26, 779015), (65, 311606), (130, 155803), (347, 58370), (449, 45110), (694, 29185), (898, 22555), (1735, 11674), (2245, 9022), (3470, 5837), (4490, 4511)]