19810820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43067}}^1$

素因数の和:43099

約数の個数: 24

約数和(自身を含む): 43412544

約数和(自身を除く): 23601724

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43067, 86134, 172268, 215335, 430670, 861340, 990541, 1981082, 3962164, 4952705, 9905410, 19810820]

約数ペア:

[(1, 19810820), (2, 9905410), (4, 4952705), (5, 3962164), (10, 1981082), (20, 990541), (23, 861340), (46, 430670), (92, 215335), (115, 172268), (230, 86134), (460, 43067)]