20099020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 43803648

約数和(自身を除く): 23704628

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 127, 164, 193, 205, 254, 386, 410, 508, 635, 772, 820, 965, 1270, 1930, 2540, 3860, 5207, 7913, 10414, 15826, 20828, 24511, 26035, 31652, 39565, 49022, 52070, 79130, 98044, 104140, 122555, 158260, 245110, 490220, 1004951, 2009902, 4019804, 5024755, 10049510, 20099020]

約数ペア:

[(1, 20099020), (2, 10049510), (4, 5024755), (5, 4019804), (10, 2009902), (20, 1004951), (41, 490220), (82, 245110), (127, 158260), (164, 122555), (193, 104140), (205, 98044), (254, 79130), (386, 52070), (410, 49022), (508, 39565), (635, 31652), (772, 26035), (820, 24511), (965, 20828), (1270, 15826), (1930, 10414), (2540, 7913), (3860, 5207)]