21432987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2203}}^1$

素因数の和:2279

約数の個数: 24

約数和(自身を含む): 33007104

約数和(自身を除く): 11574117

約数列:

[1, 3, 9, 23, 47, 69, 141, 207, 423, 1081, 2203, 3243, 6609, 9729, 19827, 50669, 103541, 152007, 310623, 456021, 931869, 2381443, 7144329, 21432987]

約数ペア:

[(1, 21432987), (3, 7144329), (9, 2381443), (23, 931869), (47, 456021), (69, 310623), (141, 152007), (207, 103541), (423, 50669), (1081, 19827), (2203, 9729), (3243, 6609)]