21042050

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{9787}}^1$

素因数の和:9842

約数の個数: 24

約数和(自身を含む): 40052496

約数和(自身を除く): 19010446

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 9787, 19574, 48935, 97870, 244675, 420841, 489350, 841682, 2104205, 4208410, 10521025, 21042050]

約数ペア:

[(1, 21042050), (2, 10521025), (5, 4208410), (10, 2104205), (25, 841682), (43, 489350), (50, 420841), (86, 244675), (215, 97870), (430, 48935), (1075, 19574), (2150, 9787)]