7780180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5479}}^1$

素因数の和:5559

約数の個数: 24

約数和(自身を含む): 16571520

約数和(自身を除く): 8791340

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 5479, 10958, 21916, 27395, 54790, 109580, 389009, 778018, 1556036, 1945045, 3890090, 7780180]

約数ペア:

[(1, 7780180), (2, 3890090), (4, 1945045), (5, 1556036), (10, 778018), (20, 389009), (71, 109580), (142, 54790), (284, 27395), (355, 21916), (710, 10958), (1420, 5479)]