21086080

素因数分解:

$2^7\times 5^1\times {\mathrm{47}}^1\times {\mathrm{701}}^1$

素因数の和:767

約数の個数: 64

約数和(自身を含む): 51554880

約数和(自身を除く): 30468800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 188, 235, 320, 376, 470, 640, 701, 752, 940, 1402, 1504, 1880, 2804, 3008, 3505, 3760, 5608, 6016, 7010, 7520, 11216, 14020, 15040, 22432, 28040, 30080, 32947, 44864, 56080, 65894, 89728, 112160, 131788, 164735, 224320, 263576, 329470, 448640, 527152, 658940, 1054304, 1317880, 2108608, 2635760, 4217216, 5271520, 10543040, 21086080]

約数ペア:

[(1, 21086080), (2, 10543040), (4, 5271520), (5, 4217216), (8, 2635760), (10, 2108608), (16, 1317880), (20, 1054304), (32, 658940), (40, 527152), (47, 448640), (64, 329470), (80, 263576), (94, 224320), (128, 164735), (160, 131788), (188, 112160), (235, 89728), (320, 65894), (376, 56080), (470, 44864), (640, 32947), (701, 30080), (752, 28040), (940, 22432), (1402, 15040), (1504, 14020), (1880, 11216), (2804, 7520), (3008, 7010), (3505, 6016), (3760, 5608)]