21444820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63073}}^1$

素因数の和:63099

約数の個数: 24

約数和(自身を含む): 47683944

約数和(自身を除く): 26239124

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63073, 126146, 252292, 315365, 630730, 1072241, 1261460, 2144482, 4288964, 5361205, 10722410, 21444820]

約数ペア:

[(1, 21444820), (2, 10722410), (4, 5361205), (5, 4288964), (10, 2144482), (17, 1261460), (20, 1072241), (34, 630730), (68, 315365), (85, 252292), (170, 126146), (340, 63073)]