19995640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71413}}^1$

素因数の和:71431

約数の個数: 32

約数和(自身を含む): 51418080

約数和(自身を除く): 31422440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71413, 142826, 285652, 357065, 499891, 571304, 714130, 999782, 1428260, 1999564, 2499455, 2856520, 3999128, 4998910, 9997820, 19995640]

約数ペア:

[(1, 19995640), (2, 9997820), (4, 4998910), (5, 3999128), (7, 2856520), (8, 2499455), (10, 1999564), (14, 1428260), (20, 999782), (28, 714130), (35, 571304), (40, 499891), (56, 357065), (70, 285652), (140, 142826), (280, 71413)]