20938585

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:528

約数の個数: 16

約数和(自身を含む): 25643520

約数和(自身を除く): 4704935

約数列:

[1, 5, 89, 211, 223, 445, 1055, 1115, 18779, 19847, 47053, 93895, 99235, 235265, 4187717, 20938585]

約数ペア:

[(1, 20938585), (5, 4187717), (89, 235265), (211, 99235), (223, 93895), (445, 47053), (1055, 19847), (1115, 18779)]