20292209

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{563}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 24545280

約数和(自身を除く): 4253071

約数列:

[1, 7, 19, 133, 271, 563, 1897, 3941, 5149, 10697, 36043, 74879, 152573, 1068011, 2898887, 20292209]

約数ペア:

[(1, 20292209), (7, 2898887), (19, 1068011), (133, 152573), (271, 74879), (563, 36043), (1897, 10697), (3941, 5149)]