18856420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85711}}^1$

素因数の和:85731

約数の個数: 24

約数和(自身を含む): 43198848

約数和(自身を除く): 24342428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85711, 171422, 342844, 428555, 857110, 942821, 1714220, 1885642, 3771284, 4714105, 9428210, 18856420]

約数ペア:

[(1, 18856420), (2, 9428210), (4, 4714105), (5, 3771284), (10, 1885642), (11, 1714220), (20, 942821), (22, 857110), (44, 428555), (55, 342844), (110, 171422), (220, 85711)]