21369897

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 32727240

約数和(自身を除く): 11357343

約数列:

[1, 3, 9, 29, 41, 87, 123, 261, 369, 1189, 1997, 3567, 5991, 10701, 17973, 57913, 81877, 173739, 245631, 521217, 736893, 2374433, 7123299, 21369897]

約数ペア:

[(1, 21369897), (3, 7123299), (9, 2374433), (29, 736893), (41, 521217), (87, 245631), (123, 173739), (261, 81877), (369, 57913), (1189, 17973), (1997, 10701), (3567, 5991)]