21519388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{3851}}^1$

素因数の和:3993

約数の個数: 24

約数和(自身を含む): 41416704

約数和(自身を除く): 19897316

約数列:

[1, 2, 4, 11, 22, 44, 127, 254, 508, 1397, 2794, 3851, 5588, 7702, 15404, 42361, 84722, 169444, 489077, 978154, 1956308, 5379847, 10759694, 21519388]

約数ペア:

[(1, 21519388), (2, 10759694), (4, 5379847), (11, 1956308), (22, 978154), (44, 489077), (127, 169444), (254, 84722), (508, 42361), (1397, 15404), (2794, 7702), (3851, 5588)]