28957480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17657}}^1$

素因数の和:17709

約数の個数: 32

約数和(自身を含む): 66747240

約数和(自身を除く): 37789760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17657, 35314, 70628, 88285, 141256, 176570, 353140, 706280, 723937, 1447874, 2895748, 3619685, 5791496, 7239370, 14478740, 28957480]

約数ペア:

[(1, 28957480), (2, 14478740), (4, 7239370), (5, 5791496), (8, 3619685), (10, 2895748), (20, 1447874), (40, 723937), (41, 706280), (82, 353140), (164, 176570), (205, 141256), (328, 88285), (410, 70628), (820, 35314), (1640, 17657)]