21728618

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1\times {\mathrm{997}}^1$

素因数の和:1657

約数の個数: 16

約数和(自身を含む): 34598664

約数和(自身を除く): 12870046

約数列:

[1, 2, 17, 34, 641, 997, 1282, 1994, 10897, 16949, 21794, 33898, 639077, 1278154, 10864309, 21728618]

約数ペア:

[(1, 21728618), (2, 10864309), (17, 1278154), (34, 639077), (641, 33898), (997, 21794), (1282, 16949), (1994, 10897)]