21444100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4987}}^1$

素因数の和:5044

約数の個数: 36

約数和(自身を含む): 47625424

約数和(自身を除く): 26181324

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4987, 9974, 19948, 24935, 49870, 99740, 124675, 214441, 249350, 428882, 498700, 857764, 1072205, 2144410, 4288820, 5361025, 10722050, 21444100]

約数ペア:

[(1, 21444100), (2, 10722050), (4, 5361025), (5, 4288820), (10, 2144410), (20, 1072205), (25, 857764), (43, 498700), (50, 428882), (86, 249350), (100, 214441), (172, 124675), (215, 99740), (430, 49870), (860, 24935), (1075, 19948), (2150, 9974), (4300, 4987)]