21400016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121591}}^1$

素因数の和:121610

約数の個数: 20

約数和(自身を含む): 45232224

約数和(自身を除く): 23832208

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121591, 243182, 486364, 972728, 1337501, 1945456, 2675002, 5350004, 10700008, 21400016]

約数ペア:

[(1, 21400016), (2, 10700008), (4, 5350004), (8, 2675002), (11, 1945456), (16, 1337501), (22, 972728), (44, 486364), (88, 243182), (176, 121591)]