20687996

素因数分解:

$2^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1789}}^1$

素因数の和:1866

約数の個数: 36

約数和(自身を含む): 42852600

約数和(自身を除く): 22164604

約数列:

[1, 2, 4, 7, 14, 28, 49, 59, 98, 118, 196, 236, 413, 826, 1652, 1789, 2891, 3578, 5782, 7156, 11564, 12523, 25046, 50092, 87661, 105551, 175322, 211102, 350644, 422204, 738857, 1477714, 2955428, 5171999, 10343998, 20687996]

約数ペア:

[(1, 20687996), (2, 10343998), (4, 5171999), (7, 2955428), (14, 1477714), (28, 738857), (49, 422204), (59, 350644), (98, 211102), (118, 175322), (196, 105551), (236, 87661), (413, 50092), (826, 25046), (1652, 12523), (1789, 11564), (2891, 7156), (3578, 5782)]