19983730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{443}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 38937024

約数和(自身を除く): 18953294

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 347, 443, 694, 886, 1735, 2215, 3470, 4430, 4511, 5759, 9022, 11518, 22555, 28795, 45110, 57590, 153721, 307442, 768605, 1537210, 1998373, 3996746, 9991865, 19983730]

約数ペア:

[(1, 19983730), (2, 9991865), (5, 3996746), (10, 1998373), (13, 1537210), (26, 768605), (65, 307442), (130, 153721), (347, 57590), (443, 45110), (694, 28795), (886, 22555), (1735, 11518), (2215, 9022), (3470, 5759), (4430, 4511)]