19902680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71081}}^1$

素因数の和:71099

約数の個数: 32

約数和(自身を含む): 51179040

約数和(自身を除く): 31276360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71081, 142162, 284324, 355405, 497567, 568648, 710810, 995134, 1421620, 1990268, 2487835, 2843240, 3980536, 4975670, 9951340, 19902680]

約数ペア:

[(1, 19902680), (2, 9951340), (4, 4975670), (5, 3980536), (7, 2843240), (8, 2487835), (10, 1990268), (14, 1421620), (20, 995134), (28, 710810), (35, 568648), (40, 497567), (56, 355405), (70, 284324), (140, 142162), (280, 71081)]