81834520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 128

約数和(自身を含む): 207360000

約数和(自身を除く): 125525480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 47, 58, 76, 79, 94, 95, 116, 145, 152, 158, 188, 190, 232, 235, 290, 316, 376, 380, 395, 470, 551, 580, 632, 760, 790, 893, 940, 1102, 1160, 1363, 1501, 1580, 1786, 1880, 2204, 2291, 2726, 2755, 3002, 3160, 3572, 3713, 4408, 4465, 4582, 5452, 5510, 6004, 6815, 7144, 7426, 7505, 8930, 9164, 10904, 11020, 11455, 12008, 13630, 14852, 15010, 17860, 18328, 18565, 22040, 22910, 25897, 27260, 29704, 30020, 35720, 37130, 43529, 45820, 51794, 54520, 60040, 70547, 74260, 87058, 91640, 103588, 107677, 129485, 141094, 148520, 174116, 207176, 215354, 217645, 258970, 282188, 348232, 352735, 430708, 435290, 517940, 538385, 564376, 705470, 861416, 870580, 1035880, 1076770, 1410940, 1741160, 2045863, 2153540, 2821880, 4091726, 4307080, 8183452, 10229315, 16366904, 20458630, 40917260, 81834520]

約数ペア:

[(1, 81834520), (2, 40917260), (4, 20458630), (5, 16366904), (8, 10229315), (10, 8183452), (19, 4307080), (20, 4091726), (29, 2821880), (38, 2153540), (40, 2045863), (47, 1741160), (58, 1410940), (76, 1076770), (79, 1035880), (94, 870580), (95, 861416), (116, 705470), (145, 564376), (152, 538385), (158, 517940), (188, 435290), (190, 430708), (232, 352735), (235, 348232), (290, 282188), (316, 258970), (376, 217645), (380, 215354), (395, 207176), (470, 174116), (551, 148520), (580, 141094), (632, 129485), (760, 107677), (790, 103588), (893, 91640), (940, 87058), (1102, 74260), (1160, 70547), (1363, 60040), (1501, 54520), (1580, 51794), (1786, 45820), (1880, 43529), (2204, 37130), (2291, 35720), (2726, 30020), (2755, 29704), (3002, 27260), (3160, 25897), (3572, 22910), (3713, 22040), (4408, 18565), (4465, 18328), (4582, 17860), (5452, 15010), (5510, 14852), (6004, 13630), (6815, 12008), (7144, 11455), (7426, 11020), (7505, 10904), (8930, 9164)]