21412225280

素因数分解:

$2^8\times 5^1\times {\mathrm{2161}}^1\times {\mathrm{7741}}^1$

素因数の和:9923

約数の個数: 72

約数和(自身を含む): 51319333464

約数和(自身を除く): 29907108184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2161, 4322, 7741, 8644, 10805, 15482, 17288, 21610, 30964, 34576, 38705, 43220, 61928, 69152, 77410, 86440, 123856, 138304, 154820, 172880, 247712, 276608, 309640, 345760, 495424, 553216, 619280, 691520, 990848, 1238560, 1383040, 1981696, 2477120, 2766080, 4954240, 9908480, 16728301, 33456602, 66913204, 83641505, 133826408, 167283010, 267652816, 334566020, 535305632, 669132040, 1070611264, 1338264080, 2141222528, 2676528160, 4282445056, 5353056320, 10706112640, 21412225280]

約数ペア:

[(1, 21412225280), (2, 10706112640), (4, 5353056320), (5, 4282445056), (8, 2676528160), (10, 2141222528), (16, 1338264080), (20, 1070611264), (32, 669132040), (40, 535305632), (64, 334566020), (80, 267652816), (128, 167283010), (160, 133826408), (256, 83641505), (320, 66913204), (640, 33456602), (1280, 16728301), (2161, 9908480), (4322, 4954240), (7741, 2766080), (8644, 2477120), (10805, 1981696), (15482, 1383040), (17288, 1238560), (21610, 990848), (30964, 691520), (34576, 619280), (38705, 553216), (43220, 495424), (61928, 345760), (69152, 309640), (77410, 276608), (86440, 247712), (123856, 172880), (138304, 154820)]