21652100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5281}}^1$

素因数の和:5336

約数の個数: 36

約数和(自身を含む): 48140148

約数和(自身を除く): 26488048

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 5281, 10562, 21124, 26405, 52810, 105620, 132025, 216521, 264050, 433042, 528100, 866084, 1082605, 2165210, 4330420, 5413025, 10826050, 21652100]

約数ペア:

[(1, 21652100), (2, 10826050), (4, 5413025), (5, 4330420), (10, 2165210), (20, 1082605), (25, 866084), (41, 528100), (50, 433042), (82, 264050), (100, 216521), (164, 132025), (205, 105620), (410, 52810), (820, 26405), (1025, 21124), (2050, 10562), (4100, 5281)]