238401520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2161}}^1$

素因数の和:2378

約数の個数: 80

約数和(自身を含む): 636977088

約数和(自身を除く): 398575568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 197, 280, 394, 560, 788, 985, 1379, 1576, 1970, 2161, 2758, 3152, 3940, 4322, 5516, 6895, 7880, 8644, 10805, 11032, 13790, 15127, 15760, 17288, 21610, 22064, 27580, 30254, 34576, 43220, 55160, 60508, 75635, 86440, 110320, 121016, 151270, 172880, 242032, 302540, 425717, 605080, 851434, 1210160, 1702868, 2128585, 2980019, 3405736, 4257170, 5960038, 6811472, 8514340, 11920076, 14900095, 17028680, 23840152, 29800190, 34057360, 47680304, 59600380, 119200760, 238401520]

約数ペア:

[(1, 238401520), (2, 119200760), (4, 59600380), (5, 47680304), (7, 34057360), (8, 29800190), (10, 23840152), (14, 17028680), (16, 14900095), (20, 11920076), (28, 8514340), (35, 6811472), (40, 5960038), (56, 4257170), (70, 3405736), (80, 2980019), (112, 2128585), (140, 1702868), (197, 1210160), (280, 851434), (394, 605080), (560, 425717), (788, 302540), (985, 242032), (1379, 172880), (1576, 151270), (1970, 121016), (2161, 110320), (2758, 86440), (3152, 75635), (3940, 60508), (4322, 55160), (5516, 43220), (6895, 34576), (7880, 30254), (8644, 27580), (10805, 22064), (11032, 21610), (13790, 17288), (15127, 15760)]