21509163

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7993}}^1$

素因数の和:8035

約数の個数: 24

約数和(自身を含む): 34917792

約数和(自身を除く): 13408629

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7993, 23979, 71937, 103909, 183839, 311727, 551517, 935181, 1654551, 2389907, 7169721, 21509163]

約数ペア:

[(1, 21509163), (3, 7169721), (9, 2389907), (13, 1654551), (23, 935181), (39, 551517), (69, 311727), (117, 183839), (207, 103909), (299, 71937), (897, 23979), (2691, 7993)]