19868564

素因数分解:

$2^2\times {\mathrm{113}}^2\times {\mathrm{389}}^1$

素因数の和:619

約数の個数: 18

約数和(自身を含む): 35170590

約数和(自身を除く): 15302026

約数列:

[1, 2, 4, 113, 226, 389, 452, 778, 1556, 12769, 25538, 43957, 51076, 87914, 175828, 4967141, 9934282, 19868564]

約数ペア:

[(1, 19868564), (2, 9934282), (4, 4967141), (113, 175828), (226, 87914), (389, 51076), (452, 43957), (778, 25538), (1556, 12769)]