20155640

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{1373}}^1$

素因数の和:1751

約数の個数: 32

約数和(自身を含む): 45506880

約数和(自身を除く): 25351240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1373, 1468, 1835, 2746, 2936, 3670, 5492, 6865, 7340, 10984, 13730, 14680, 27460, 54920, 503891, 1007782, 2015564, 2519455, 4031128, 5038910, 10077820, 20155640]

約数ペア:

[(1, 20155640), (2, 10077820), (4, 5038910), (5, 4031128), (8, 2519455), (10, 2015564), (20, 1007782), (40, 503891), (367, 54920), (734, 27460), (1373, 14680), (1468, 13730), (1835, 10984), (2746, 7340), (2936, 6865), (3670, 5492)]