18999886

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21739}}^1$

素因数の和:21783

約数の個数: 16

約数和(自身を含む): 31305600

約数和(自身を除く): 12305714

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 21739, 43478, 413041, 499997, 826082, 999994, 9499943, 18999886]

約数ペア:

[(1, 18999886), (2, 9499943), (19, 999994), (23, 826082), (38, 499997), (46, 413041), (437, 43478), (874, 21739)]