21389638

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1\times {\mathrm{997}}^1$

素因数の和:1647

約数の個数: 16

約数和(自身を含む): 34059744

約数和(自身を除く): 12670106

約数列:

[1, 2, 17, 34, 631, 997, 1262, 1994, 10727, 16949, 21454, 33898, 629107, 1258214, 10694819, 21389638]

約数ペア:

[(1, 21389638), (2, 10694819), (17, 1258214), (34, 629107), (631, 33898), (997, 21454), (1262, 16949), (1994, 10727)]