18872145

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{8923}}^1$

素因数の和:8981

約数の個数: 24

約数和(自身を含む): 33411456

約数和(自身を除く): 14539311

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 8923, 26769, 44615, 80307, 133845, 401535, 419381, 1258143, 2096905, 3774429, 6290715, 18872145]

約数ペア:

[(1, 18872145), (3, 6290715), (5, 3774429), (9, 2096905), (15, 1258143), (45, 419381), (47, 401535), (141, 133845), (235, 80307), (423, 44615), (705, 26769), (2115, 8923)]