19863580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90289}}^1$

素因数の和:90309

約数の個数: 24

約数和(自身を含む): 45506160

約数和(自身を除く): 25642580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90289, 180578, 361156, 451445, 902890, 993179, 1805780, 1986358, 3972716, 4965895, 9931790, 19863580]

約数ペア:

[(1, 19863580), (2, 9931790), (4, 4965895), (5, 3972716), (10, 1986358), (11, 1805780), (20, 993179), (22, 902890), (44, 451445), (55, 361156), (110, 180578), (220, 90289)]