21921245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{8893}}^1$

素因数の和:8944

約数の個数: 16

約数和(自身を含む): 28816560

約数和(自身を除く): 6895315

約数列:

[1, 5, 17, 29, 85, 145, 493, 2465, 8893, 44465, 151181, 257897, 755905, 1289485, 4384249, 21921245]

約数ペア:

[(1, 21921245), (5, 4384249), (17, 1289485), (29, 755905), (85, 257897), (145, 151181), (493, 44465), (2465, 8893)]