21405934

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{31387}}^1$

素因数の和:31431

約数の個数: 16

約数和(自身を含む): 36158976

約数和(自身を除く): 14753042

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 31387, 62774, 345257, 690514, 972997, 1945994, 10702967, 21405934]

約数ペア:

[(1, 21405934), (2, 10702967), (11, 1945994), (22, 972997), (31, 690514), (62, 345257), (341, 62774), (682, 31387)]