20085717040

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{521}}^1\times {\mathrm{2161}}^1$

素因数の和:2918

約数の個数: 80

約数和(自身を含む): 47020490496

約数和(自身を除く): 26934773456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 521, 892, 1042, 1115, 1784, 2084, 2161, 2230, 2605, 3568, 4168, 4322, 4460, 5210, 8336, 8644, 8920, 10420, 10805, 17288, 17840, 20840, 21610, 34576, 41680, 43220, 86440, 116183, 172880, 232366, 464732, 481903, 580915, 929464, 963806, 1125881, 1161830, 1858928, 1927612, 2251762, 2323660, 2409515, 3855224, 4503524, 4647320, 4819030, 5629405, 7710448, 9007048, 9294640, 9638060, 11258810, 18014096, 19276120, 22517620, 38552240, 45035240, 90070480, 251071463, 502142926, 1004285852, 1255357315, 2008571704, 2510714630, 4017143408, 5021429260, 10042858520, 20085717040]

約数ペア:

[(1, 20085717040), (2, 10042858520), (4, 5021429260), (5, 4017143408), (8, 2510714630), (10, 2008571704), (16, 1255357315), (20, 1004285852), (40, 502142926), (80, 251071463), (223, 90070480), (446, 45035240), (521, 38552240), (892, 22517620), (1042, 19276120), (1115, 18014096), (1784, 11258810), (2084, 9638060), (2161, 9294640), (2230, 9007048), (2605, 7710448), (3568, 5629405), (4168, 4819030), (4322, 4647320), (4460, 4503524), (5210, 3855224), (8336, 2409515), (8644, 2323660), (8920, 2251762), (10420, 1927612), (10805, 1858928), (17288, 1161830), (17840, 1125881), (20840, 963806), (21610, 929464), (34576, 580915), (41680, 481903), (43220, 464732), (86440, 232366), (116183, 172880)]