71380820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509863}}^1$

素因数の和:509879

約数の個数: 24

約数和(自身を含む): 171314304

約数和(自身を除く): 99933484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509863, 1019726, 2039452, 2549315, 3569041, 5098630, 7138082, 10197260, 14276164, 17845205, 35690410, 71380820]

約数ペア:

[(1, 71380820), (2, 35690410), (4, 17845205), (5, 14276164), (7, 10197260), (10, 7138082), (14, 5098630), (20, 3569041), (28, 2549315), (35, 2039452), (70, 1019726), (140, 509863)]