18289945

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1787}}^1$

素因数の和:1904

約数の個数: 16

約数和(自身を含む): 23172480

約数和(自身を除く): 4882535

約数列:

[1, 5, 23, 89, 115, 445, 1787, 2047, 8935, 10235, 41101, 159043, 205505, 795215, 3657989, 18289945]

約数ペア:

[(1, 18289945), (5, 3657989), (23, 795215), (89, 205505), (115, 159043), (445, 41101), (1787, 10235), (2047, 8935)]