428560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1$

素因数の和:511

約数の個数: 40

約数和(自身を含む): 1089216

約数和(自身を除く): 660656

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 487, 880, 974, 1948, 2435, 3896, 4870, 5357, 7792, 9740, 10714, 19480, 21428, 26785, 38960, 42856, 53570, 85712, 107140, 214280, 428560]

約数ペア:

[(1, 428560), (2, 214280), (4, 107140), (5, 85712), (8, 53570), (10, 42856), (11, 38960), (16, 26785), (20, 21428), (22, 19480), (40, 10714), (44, 9740), (55, 7792), (80, 5357), (88, 4870), (110, 3896), (176, 2435), (220, 1948), (440, 974), (487, 880)]