4128920

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{947}}^1$

素因数の和:1067

約数の個数: 32

約数和(自身を含む): 9385200

約数和(自身を除く): 5256280

約数列:

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

約数ペア:

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