21789120920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{31391}}^1$

素因数の和:31513

約数の個数: 128

約数和(自身を含む): 58404188160

約数和(自身を除く): 36615067240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 67, 70, 74, 134, 140, 148, 185, 259, 268, 280, 296, 335, 370, 469, 518, 536, 670, 740, 938, 1036, 1295, 1340, 1480, 1876, 2072, 2345, 2479, 2590, 2680, 3752, 4690, 4958, 5180, 9380, 9916, 10360, 12395, 17353, 18760, 19832, 24790, 31391, 34706, 49580, 62782, 69412, 86765, 99160, 125564, 138824, 156955, 173530, 219737, 251128, 313910, 347060, 439474, 627820, 694120, 878948, 1098685, 1161467, 1255640, 1757896, 2103197, 2197370, 2322934, 4206394, 4394740, 4645868, 5807335, 8130269, 8412788, 8789480, 9291736, 10515985, 11614670, 14722379, 16260538, 16825576, 21031970, 23229340, 29444758, 32521076, 40651345, 42063940, 46458680, 58889516, 65042152, 73611895, 77818289, 81302690, 84127880, 117779032, 147223790, 155636578, 162605380, 294447580, 311273156, 325210760, 389091445, 544728023, 588895160, 622546312, 778182890, 1089456046, 1556365780, 2178912092, 2723640115, 3112731560, 4357824184, 5447280230, 10894560460, 21789120920]

約数ペア:

[(1, 21789120920), (2, 10894560460), (4, 5447280230), (5, 4357824184), (7, 3112731560), (8, 2723640115), (10, 2178912092), (14, 1556365780), (20, 1089456046), (28, 778182890), (35, 622546312), (37, 588895160), (40, 544728023), (56, 389091445), (67, 325210760), (70, 311273156), (74, 294447580), (134, 162605380), (140, 155636578), (148, 147223790), (185, 117779032), (259, 84127880), (268, 81302690), (280, 77818289), (296, 73611895), (335, 65042152), (370, 58889516), (469, 46458680), (518, 42063940), (536, 40651345), (670, 32521076), (740, 29444758), (938, 23229340), (1036, 21031970), (1295, 16825576), (1340, 16260538), (1480, 14722379), (1876, 11614670), (2072, 10515985), (2345, 9291736), (2479, 8789480), (2590, 8412788), (2680, 8130269), (3752, 5807335), (4690, 4645868), (4958, 4394740), (5180, 4206394), (9380, 2322934), (9916, 2197370), (10360, 2103197), (12395, 1757896), (17353, 1255640), (18760, 1161467), (19832, 1098685), (24790, 878948), (31391, 694120), (34706, 627820), (49580, 439474), (62782, 347060), (69412, 313910), (86765, 251128), (99160, 219737), (125564, 173530), (138824, 156955)]