21000860

素因数分解:

$2^2\times 5^1\times {\mathrm{853}}^1\times {\mathrm{1231}}^1$

素因数の和:2093

約数の個数: 24

約数和(自身を含む): 44189376

約数和(自身を除く): 23188516

約数列:

[1, 2, 4, 5, 10, 20, 853, 1231, 1706, 2462, 3412, 4265, 4924, 6155, 8530, 12310, 17060, 24620, 1050043, 2100086, 4200172, 5250215, 10500430, 21000860]

約数ペア:

[(1, 21000860), (2, 10500430), (4, 5250215), (5, 4200172), (10, 2100086), (20, 1050043), (853, 24620), (1231, 17060), (1706, 12310), (2462, 8530), (3412, 6155), (4265, 4924)]