19538420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88811}}^1$

素因数の和:88831

約数の個数: 24

約数和(自身を含む): 44761248

約数和(自身を除く): 25222828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88811, 177622, 355244, 444055, 888110, 976921, 1776220, 1953842, 3907684, 4884605, 9769210, 19538420]

約数ペア:

[(1, 19538420), (2, 9769210), (4, 4884605), (5, 3907684), (10, 1953842), (11, 1776220), (20, 976921), (22, 888110), (44, 444055), (55, 355244), (110, 177622), (220, 88811)]