21613305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4787}}^1$

素因数の和:4845

約数の個数: 32

約数和(自身を含む): 40449024

約数和(自身を除く): 18835719

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4787, 14361, 23935, 33509, 71805, 100527, 167545, 205841, 502635, 617523, 1029205, 1440887, 3087615, 4322661, 7204435, 21613305]

約数ペア:

[(1, 21613305), (3, 7204435), (5, 4322661), (7, 3087615), (15, 1440887), (21, 1029205), (35, 617523), (43, 502635), (105, 205841), (129, 167545), (215, 100527), (301, 71805), (645, 33509), (903, 23935), (1505, 14361), (4515, 4787)]