21009718

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1\times {\mathrm{1031}}^1$

素因数の和:1499

約数の個数: 16

約数和(自身を含む): 32990976

約数和(自身を除く): 11981258

約数列:

[1, 2, 23, 46, 443, 886, 1031, 2062, 10189, 20378, 23713, 47426, 456733, 913466, 10504859, 21009718]

約数ペア:

[(1, 21009718), (2, 10504859), (23, 913466), (46, 456733), (443, 47426), (886, 23713), (1031, 20378), (2062, 10189)]