18478803

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{9887}}^1$

素因数の和:9986

約数の個数: 16

約数和(自身を含む): 28477440

約数和(自身を除く): 9998637

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 9887, 29661, 69209, 207627, 879943, 2639829, 6159601, 18478803]

約数ペア:

[(1, 18478803), (3, 6159601), (7, 2639829), (21, 879943), (89, 207627), (267, 69209), (623, 29661), (1869, 9887)]