18712695

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 12080265

約数列:

[1, 3, 5, 15, 89, 107, 131, 267, 321, 393, 445, 535, 655, 1335, 1605, 1965, 9523, 11659, 14017, 28569, 34977, 42051, 47615, 58295, 70085, 142845, 174885, 210255, 1247513, 3742539, 6237565, 18712695]

約数ペア:

[(1, 18712695), (3, 6237565), (5, 3742539), (15, 1247513), (89, 210255), (107, 174885), (131, 142845), (267, 70085), (321, 58295), (393, 47615), (445, 42051), (535, 34977), (655, 28569), (1335, 14017), (1605, 11659), (1965, 9523)]