20591020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25111}}^1$

素因数の和:25161

約数の個数: 24

約数和(自身を含む): 44297568

約数和(自身を除く): 23706548

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25111, 50222, 100444, 125555, 251110, 502220, 1029551, 2059102, 4118204, 5147755, 10295510, 20591020]

約数ペア:

[(1, 20591020), (2, 10295510), (4, 5147755), (5, 4118204), (10, 2059102), (20, 1029551), (41, 502220), (82, 251110), (164, 125555), (205, 100444), (410, 50222), (820, 25111)]