21000657691

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1\times {\mathrm{21863}}^1$

素因数の和:23910

約数の個数: 16

約数和(自身を含む): 23240032704

約数和(自身を除く): 2239375013

約数列:

[1, 13, 37, 481, 1997, 21863, 25961, 73889, 284219, 808931, 960557, 10516103, 43660411, 567585343, 1615435207, 21000657691]

約数ペア:

[(1, 21000657691), (13, 1615435207), (37, 567585343), (481, 43660411), (1997, 10516103), (21863, 960557), (25961, 808931), (73889, 284219)]