20728396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2539}}^1$

素因数の和:2713

約数の個数: 24

約数和(自身を含む): 39329360

約数和(自身を除く): 18600964

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2539, 4082, 5078, 8164, 10156, 33007, 66014, 132028, 398623, 797246, 1594492, 5182099, 10364198, 20728396]

約数ペア:

[(1, 20728396), (2, 10364198), (4, 5182099), (13, 1594492), (26, 797246), (52, 398623), (157, 132028), (314, 66014), (628, 33007), (2041, 10156), (2539, 8164), (4082, 5078)]