19875760

素因数分解:

$2^4\times 5^1\times {\mathrm{248447}}^1$

素因数の和:248460

約数の個数: 20

約数和(自身を含む): 46211328

約数和(自身を除く): 26335568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248447, 496894, 993788, 1242235, 1987576, 2484470, 3975152, 4968940, 9937880, 19875760]

約数ペア:

[(1, 19875760), (2, 9937880), (4, 4968940), (5, 3975152), (8, 2484470), (10, 1987576), (16, 1242235), (20, 993788), (40, 496894), (80, 248447)]