217516420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{988711}}^1$

素因数の和:988731

約数の個数: 24

約数和(自身を含む): 498310848

約数和(自身を除く): 280794428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 988711, 1977422, 3954844, 4943555, 9887110, 10875821, 19774220, 21751642, 43503284, 54379105, 108758210, 217516420]

約数ペア:

[(1, 217516420), (2, 108758210), (4, 54379105), (5, 43503284), (10, 21751642), (11, 19774220), (20, 10875821), (22, 9887110), (44, 4943555), (55, 3954844), (110, 1977422), (220, 988711)]