8257840

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{947}}^1$

素因数の和:1069

約数の個数: 40

約数和(自身を含む): 19396080

約数和(自身を除く): 11138240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 947, 1090, 1744, 1894, 2180, 3788, 4360, 4735, 7576, 8720, 9470, 15152, 18940, 37880, 75760, 103223, 206446, 412892, 516115, 825784, 1032230, 1651568, 2064460, 4128920, 8257840]

約数ペア:

[(1, 8257840), (2, 4128920), (4, 2064460), (5, 1651568), (8, 1032230), (10, 825784), (16, 516115), (20, 412892), (40, 206446), (80, 103223), (109, 75760), (218, 37880), (436, 18940), (545, 15152), (872, 9470), (947, 8720), (1090, 7576), (1744, 4735), (1894, 4360), (2180, 3788)]