21609189

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5623}}^1$

素因数の和:5697

約数の個数: 24

約数和(自身を含む): 36263552

約数和(自身を除く): 14654363

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5623, 16869, 39361, 50607, 118083, 343003, 354249, 1029009, 2401021, 3087027, 7203063, 21609189]

約数ペア:

[(1, 21609189), (3, 7203063), (7, 3087027), (9, 2401021), (21, 1029009), (61, 354249), (63, 343003), (183, 118083), (427, 50607), (549, 39361), (1281, 16869), (3843, 5623)]