2021230960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{7351}}^1$

素因数の和:7862

約数の個数: 80

約数和(自身を含む): 5382369792

約数和(自身を除く): 3361138832

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 491, 560, 982, 1964, 2455, 3437, 3928, 4910, 6874, 7351, 7856, 9820, 13748, 14702, 17185, 19640, 27496, 29404, 34370, 36755, 39280, 51457, 54992, 58808, 68740, 73510, 102914, 117616, 137480, 147020, 205828, 257285, 274960, 294040, 411656, 514570, 588080, 823312, 1029140, 2058280, 3609341, 4116560, 7218682, 14437364, 18046705, 25265387, 28874728, 36093410, 50530774, 57749456, 72186820, 101061548, 126326935, 144373640, 202123096, 252653870, 288747280, 404246192, 505307740, 1010615480, 2021230960]

約数ペア:

[(1, 2021230960), (2, 1010615480), (4, 505307740), (5, 404246192), (7, 288747280), (8, 252653870), (10, 202123096), (14, 144373640), (16, 126326935), (20, 101061548), (28, 72186820), (35, 57749456), (40, 50530774), (56, 36093410), (70, 28874728), (80, 25265387), (112, 18046705), (140, 14437364), (280, 7218682), (491, 4116560), (560, 3609341), (982, 2058280), (1964, 1029140), (2455, 823312), (3437, 588080), (3928, 514570), (4910, 411656), (6874, 294040), (7351, 274960), (7856, 257285), (9820, 205828), (13748, 147020), (14702, 137480), (17185, 117616), (19640, 102914), (27496, 73510), (29404, 68740), (34370, 58808), (36755, 54992), (39280, 51457)]