21056679

素因数分解:

$3^5\times 7^1\times {\mathrm{12379}}^1$

素因数の和:12401

約数の個数: 24

約数和(自身を含む): 36050560

約数和(自身を除く): 14993881

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12379, 37137, 86653, 111411, 259959, 334233, 779877, 1002699, 2339631, 3008097, 7018893, 21056679]

約数ペア:

[(1, 21056679), (3, 7018893), (7, 3008097), (9, 2339631), (21, 1002699), (27, 779877), (63, 334233), (81, 259959), (189, 111411), (243, 86653), (567, 37137), (1701, 12379)]