21039902

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{21871}}^1$

素因数の和:21923

約数の個数: 16

約数和(自身を含む): 34907712

約数和(自身を除く): 13867810

約数列:

[1, 2, 13, 26, 37, 74, 481, 962, 21871, 43742, 284323, 568646, 809227, 1618454, 10519951, 21039902]

約数ペア:

[(1, 21039902), (2, 10519951), (13, 1618454), (26, 809227), (37, 568646), (74, 284323), (481, 43742), (962, 21871)]