21561188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{2539}}^1$

素因数の和:2747

約数の個数: 24

約数和(自身を含む): 41391840

約数和(自身を除く): 19830652

約数列:

[1, 2, 4, 11, 22, 44, 193, 386, 772, 2123, 2539, 4246, 5078, 8492, 10156, 27929, 55858, 111716, 490027, 980054, 1960108, 5390297, 10780594, 21561188]

約数ペア:

[(1, 21561188), (2, 10780594), (4, 5390297), (11, 1960108), (22, 980054), (44, 490027), (193, 111716), (386, 55858), (772, 27929), (2123, 10156), (2539, 8492), (4246, 5078)]