31408880

素因数分解:

$2^4\times 5^1\times {\mathrm{392611}}^1$

素因数の和:392624

約数の個数: 20

約数和(自身を含む): 73025832

約数和(自身を除く): 41616952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392611, 785222, 1570444, 1963055, 3140888, 3926110, 6281776, 7852220, 15704440, 31408880]

約数ペア:

[(1, 31408880), (2, 15704440), (4, 7852220), (5, 6281776), (8, 3926110), (10, 3140888), (16, 1963055), (20, 1570444), (40, 785222), (80, 392611)]