20511740

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21821}}^1$

素因数の和:21877

約数の個数: 24

約数和(自身を含む): 43993152

約数和(自身を除く): 23481412

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21821, 43642, 87284, 109105, 218210, 436420, 1025587, 2051174, 4102348, 5127935, 10255870, 20511740]

約数ペア:

[(1, 20511740), (2, 10255870), (4, 5127935), (5, 4102348), (10, 2051174), (20, 1025587), (47, 436420), (94, 218210), (188, 109105), (235, 87284), (470, 43642), (940, 21821)]