21090394

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12107}}^1$

素因数の和:12189

約数の個数: 16

約数和(自身を含む): 34580448

約数和(自身を除く): 13490054

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12107, 24214, 157391, 314782, 811169, 1622338, 10545197, 21090394]

約数ペア:

[(1, 21090394), (2, 10545197), (13, 1622338), (26, 811169), (67, 314782), (134, 157391), (871, 24214), (1742, 12107)]