20991136

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{17729}}^1$

素因数の和:17776

約数の個数: 24

約数和(自身を含む): 42445620

約数和(自身を除く): 21454484

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 148, 296, 592, 1184, 17729, 35458, 70916, 141832, 283664, 567328, 655973, 1311946, 2623892, 5247784, 10495568, 20991136]

約数ペア:

[(1, 20991136), (2, 10495568), (4, 5247784), (8, 2623892), (16, 1311946), (32, 655973), (37, 567328), (74, 283664), (148, 141832), (296, 70916), (592, 35458), (1184, 17729)]