18675909

素因数分解:

$3^2\times 7^2\times {\mathrm{42349}}^1$

素因数の和:42369

約数の個数: 18

約数和(自身を含む): 31381350

約数和(自身を除く): 12705441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42349, 127047, 296443, 381141, 889329, 2075101, 2667987, 6225303, 18675909]

約数ペア:

[(1, 18675909), (3, 6225303), (7, 2667987), (9, 2075101), (21, 889329), (49, 381141), (63, 296443), (147, 127047), (441, 42349)]