19918456

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{60727}}^1$

素因数の和:60774

約数の個数: 16

約数和(自身を含む): 38258640

約数和(自身を除く): 18340184

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 60727, 121454, 242908, 485816, 2489807, 4979614, 9959228, 19918456]

約数ペア:

[(1, 19918456), (2, 9959228), (4, 4979614), (8, 2489807), (41, 485816), (82, 242908), (164, 121454), (328, 60727)]