81516580

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{9413}}^1$

素因数の和:9855

約数の個数: 24

約数和(自身を含む): 171598392

約数和(自身を除く): 90081812

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 4330, 8660, 9413, 18826, 37652, 47065, 94130, 188260, 4075829, 8151658, 16303316, 20379145, 40758290, 81516580]

約数ペア:

[(1, 81516580), (2, 40758290), (4, 20379145), (5, 16303316), (10, 8151658), (20, 4075829), (433, 188260), (866, 94130), (1732, 47065), (2165, 37652), (4330, 18826), (8660, 9413)]