21020679

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1873}}^1$

素因数の和:1951

約数の個数: 24

約数和(自身を含む): 32157840

約数和(自身を除く): 11137161

約数列:

[1, 3, 9, 29, 43, 87, 129, 261, 387, 1247, 1873, 3741, 5619, 11223, 16857, 54317, 80539, 162951, 241617, 488853, 724851, 2335631, 7006893, 21020679]

約数ペア:

[(1, 21020679), (3, 7006893), (9, 2335631), (29, 724851), (43, 488853), (87, 241617), (129, 162951), (261, 80539), (387, 54317), (1247, 16857), (1873, 11223), (3741, 5619)]