19959520

素因数分解:

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

素因数の和:344

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 34907936

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 71, 80, 112, 140, 142, 160, 224, 251, 280, 284, 355, 497, 502, 560, 568, 710, 994, 1004, 1120, 1136, 1255, 1420, 1757, 1988, 2008, 2272, 2485, 2510, 2840, 3514, 3976, 4016, 4970, 5020, 5680, 7028, 7952, 8032, 8785, 9940, 10040, 11360, 14056, 15904, 17570, 17821, 19880, 20080, 28112, 35140, 35642, 39760, 40160, 56224, 70280, 71284, 79520, 89105, 124747, 140560, 142568, 178210, 249494, 281120, 285136, 356420, 498988, 570272, 623735, 712840, 997976, 1247470, 1425680, 1995952, 2494940, 2851360, 3991904, 4989880, 9979760, 19959520]

約数ペア:

[(1, 19959520), (2, 9979760), (4, 4989880), (5, 3991904), (7, 2851360), (8, 2494940), (10, 1995952), (14, 1425680), (16, 1247470), (20, 997976), (28, 712840), (32, 623735), (35, 570272), (40, 498988), (56, 356420), (70, 285136), (71, 281120), (80, 249494), (112, 178210), (140, 142568), (142, 140560), (160, 124747), (224, 89105), (251, 79520), (280, 71284), (284, 70280), (355, 56224), (497, 40160), (502, 39760), (560, 35642), (568, 35140), (710, 28112), (994, 20080), (1004, 19880), (1120, 17821), (1136, 17570), (1255, 15904), (1420, 14056), (1757, 11360), (1988, 10040), (2008, 9940), (2272, 8785), (2485, 8032), (2510, 7952), (2840, 7028), (3514, 5680), (3976, 5020), (4016, 4970)]