20831355

素因数分解:

$3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1031}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 36223200

約数和(自身を除く): 15391845

約数列:

[1, 3, 5, 9, 15, 45, 449, 1031, 1347, 2245, 3093, 4041, 5155, 6735, 9279, 15465, 20205, 46395, 462919, 1388757, 2314595, 4166271, 6943785, 20831355]

約数ペア:

[(1, 20831355), (3, 6943785), (5, 4166271), (9, 2314595), (15, 1388757), (45, 462919), (449, 46395), (1031, 20205), (1347, 15465), (2245, 9279), (3093, 6735), (4041, 5155)]