21556976

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6637}}^1$

素因数の和:6681

約数の個数: 40

約数和(自身を含む): 49386720

約数和(自身を除く): 27829744

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 203, 232, 406, 464, 812, 1624, 3248, 6637, 13274, 26548, 46459, 53096, 92918, 106192, 185836, 192473, 371672, 384946, 743344, 769892, 1347311, 1539784, 2694622, 3079568, 5389244, 10778488, 21556976]

約数ペア:

[(1, 21556976), (2, 10778488), (4, 5389244), (7, 3079568), (8, 2694622), (14, 1539784), (16, 1347311), (28, 769892), (29, 743344), (56, 384946), (58, 371672), (112, 192473), (116, 185836), (203, 106192), (232, 92918), (406, 53096), (464, 46459), (812, 26548), (1624, 13274), (3248, 6637)]