4989880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 13063680

約数和(自身を除く): 8073800

約数列:

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

約数ペア:

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