9979760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 26998272

約数和(自身を除く): 17018512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 251, 280, 284, 355, 497, 502, 560, 568, 710, 994, 1004, 1136, 1255, 1420, 1757, 1988, 2008, 2485, 2510, 2840, 3514, 3976, 4016, 4970, 5020, 5680, 7028, 7952, 8785, 9940, 10040, 14056, 17570, 17821, 19880, 20080, 28112, 35140, 35642, 39760, 70280, 71284, 89105, 124747, 140560, 142568, 178210, 249494, 285136, 356420, 498988, 623735, 712840, 997976, 1247470, 1425680, 1995952, 2494940, 4989880, 9979760]

約数ペア:

[(1, 9979760), (2, 4989880), (4, 2494940), (5, 1995952), (7, 1425680), (8, 1247470), (10, 997976), (14, 712840), (16, 623735), (20, 498988), (28, 356420), (35, 285136), (40, 249494), (56, 178210), (70, 142568), (71, 140560), (80, 124747), (112, 89105), (140, 71284), (142, 70280), (251, 39760), (280, 35642), (284, 35140), (355, 28112), (497, 20080), (502, 19880), (560, 17821), (568, 17570), (710, 14056), (994, 10040), (1004, 9940), (1136, 8785), (1255, 7952), (1420, 7028), (1757, 5680), (1988, 5020), (2008, 4970), (2485, 4016), (2510, 3976), (2840, 3514)]