21961900

素因数分解:

$2^2\times 5^2\times {\mathrm{219619}}^1$

素因数の和:219633

約数の個数: 18

約数和(自身を含む): 47657540

約数和(自身を除く): 25695640

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 219619, 439238, 878476, 1098095, 2196190, 4392380, 5490475, 10980950, 21961900]

約数ペア:

[(1, 21961900), (2, 10980950), (4, 5490475), (5, 4392380), (10, 2196190), (20, 1098095), (25, 878476), (50, 439238), (100, 219619)]