19880872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{225919}}^1$

素因数の和:225936

約数の個数: 16

約数和(自身を含む): 40665600

約数和(自身を除く): 20784728

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 225919, 451838, 903676, 1807352, 2485109, 4970218, 9940436, 19880872]

約数ペア:

[(1, 19880872), (2, 9940436), (4, 4970218), (8, 2485109), (11, 1807352), (22, 903676), (44, 451838), (88, 225919)]