2019648880

素因数分解:

$2^4\times 5^1\times {\mathrm{25245611}}^1$

素因数の和:25245624

約数の個数: 20

約数和(自身を含む): 4695683832

約数和(自身を除く): 2676034952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25245611, 50491222, 100982444, 126228055, 201964888, 252456110, 403929776, 504912220, 1009824440, 2019648880]

約数ペア:

[(1, 2019648880), (2, 1009824440), (4, 504912220), (5, 403929776), (8, 252456110), (10, 201964888), (16, 126228055), (20, 100982444), (40, 50491222), (80, 25245611)]