20857487

素因数分解:

$7^5\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:125

約数の個数: 24

約数和(自身を含む): 26117856

約数和(自身を除く): 5260369

約数列:

[1, 7, 17, 49, 73, 119, 343, 511, 833, 1241, 2401, 3577, 5831, 8687, 16807, 25039, 40817, 60809, 175273, 285719, 425663, 1226911, 2979641, 20857487]

約数ペア:

[(1, 20857487), (7, 2979641), (17, 1226911), (49, 425663), (73, 285719), (119, 175273), (343, 60809), (511, 40817), (833, 25039), (1241, 16807), (2401, 8687), (3577, 5831)]