20821196

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43019}}^1$

素因数の和:43045

約数の個数: 18

約数和(自身を含む): 40051620

約数和(自身を除く): 19230424

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43019, 86038, 172076, 473209, 946418, 1892836, 5205299, 10410598, 20821196]

約数ペア:

[(1, 20821196), (2, 10410598), (4, 5205299), (11, 1892836), (22, 946418), (44, 473209), (121, 172076), (242, 86038), (484, 43019)]