18781586

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:925

約数の個数: 16

約数和(自身を含む): 28747224

約数和(自身を除く): 9965638

約数列:

[1, 2, 73, 146, 197, 394, 653, 1306, 14381, 28762, 47669, 95338, 128641, 257282, 9390793, 18781586]

約数ペア:

[(1, 18781586), (2, 9390793), (73, 257282), (146, 128641), (197, 95338), (394, 47669), (653, 28762), (1306, 14381)]