12638120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28723}}^1$

素因数の和:28745

約数の個数: 32

約数和(自身を含む): 31021920

約数和(自身を除く): 18383800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 28723, 57446, 114892, 143615, 229784, 287230, 315953, 574460, 631906, 1148920, 1263812, 1579765, 2527624, 3159530, 6319060, 12638120]

約数ペア:

[(1, 12638120), (2, 6319060), (4, 3159530), (5, 2527624), (8, 1579765), (10, 1263812), (11, 1148920), (20, 631906), (22, 574460), (40, 315953), (44, 287230), (55, 229784), (88, 143615), (110, 114892), (220, 57446), (440, 28723)]