2021179720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{5351}}^1$

素因数の和:5459

約数の個数: 128

約数和(自身を含む): 5548953600

約数和(自身を除く): 3527773880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 71, 76, 95, 133, 140, 142, 152, 190, 266, 280, 284, 355, 380, 497, 532, 568, 665, 710, 760, 994, 1064, 1330, 1349, 1420, 1988, 2485, 2660, 2698, 2840, 3976, 4970, 5320, 5351, 5396, 6745, 9443, 9940, 10702, 10792, 13490, 18886, 19880, 21404, 26755, 26980, 37457, 37772, 42808, 47215, 53510, 53960, 74914, 75544, 94430, 101669, 107020, 149828, 187285, 188860, 203338, 214040, 299656, 374570, 377720, 379921, 406676, 508345, 711683, 749140, 759842, 813352, 1016690, 1423366, 1498280, 1519684, 1899605, 2033380, 2659447, 2846732, 3039368, 3558415, 3799210, 4066760, 5318894, 5693464, 7116830, 7218499, 7598420, 10637788, 13297235, 14233660, 14436998, 15196840, 21275576, 26594470, 28467320, 28873996, 36092495, 50529493, 53188940, 57747992, 72184990, 101058986, 106377880, 144369980, 202117972, 252647465, 288739960, 404235944, 505294930, 1010589860, 2021179720]

約数ペア:

[(1, 2021179720), (2, 1010589860), (4, 505294930), (5, 404235944), (7, 288739960), (8, 252647465), (10, 202117972), (14, 144369980), (19, 106377880), (20, 101058986), (28, 72184990), (35, 57747992), (38, 53188940), (40, 50529493), (56, 36092495), (70, 28873996), (71, 28467320), (76, 26594470), (95, 21275576), (133, 15196840), (140, 14436998), (142, 14233660), (152, 13297235), (190, 10637788), (266, 7598420), (280, 7218499), (284, 7116830), (355, 5693464), (380, 5318894), (497, 4066760), (532, 3799210), (568, 3558415), (665, 3039368), (710, 2846732), (760, 2659447), (994, 2033380), (1064, 1899605), (1330, 1519684), (1349, 1498280), (1420, 1423366), (1988, 1016690), (2485, 813352), (2660, 759842), (2698, 749140), (2840, 711683), (3976, 508345), (4970, 406676), (5320, 379921), (5351, 377720), (5396, 374570), (6745, 299656), (9443, 214040), (9940, 203338), (10702, 188860), (10792, 187285), (13490, 149828), (18886, 107020), (19880, 101669), (21404, 94430), (26755, 75544), (26980, 74914), (37457, 53960), (37772, 53510), (42808, 47215)]