21972321

素因数分解:

$3^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{1523}}^1$

素因数の和:1765

約数の個数: 24

約数和(自身を含む): 36454080

約数和(自身を除く): 14481759

約数列:

[1, 3, 7, 9, 21, 63, 229, 687, 1523, 1603, 2061, 4569, 4809, 10661, 13707, 14427, 31983, 95949, 348767, 1046301, 2441369, 3138903, 7324107, 21972321]

約数ペア:

[(1, 21972321), (3, 7324107), (7, 3138903), (9, 2441369), (21, 1046301), (63, 348767), (229, 95949), (687, 31983), (1523, 14427), (1603, 13707), (2061, 10661), (4569, 4809)]