19870293640

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{708641}}^1$

素因数の和:709353

約数の個数: 32

約数和(自身を含む): 44772001560

約数和(自身を除く): 24901707920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 1402, 2804, 3505, 5608, 7010, 14020, 28040, 708641, 1417282, 2834564, 3543205, 5669128, 7086410, 14172820, 28345640, 496757341, 993514682, 1987029364, 2483786705, 3974058728, 4967573410, 9935146820, 19870293640]

約数ペア:

[(1, 19870293640), (2, 9935146820), (4, 4967573410), (5, 3974058728), (8, 2483786705), (10, 1987029364), (20, 993514682), (40, 496757341), (701, 28345640), (1402, 14172820), (2804, 7086410), (3505, 5669128), (5608, 3543205), (7010, 2834564), (14020, 1417282), (28040, 708641)]