217872080

素因数分解:

$2^4\times 5^1\times {\mathrm{2723401}}^1$

素因数の和:2723414

約数の個数: 20

約数和(自身を含む): 506552772

約数和(自身を除く): 288680692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2723401, 5446802, 10893604, 13617005, 21787208, 27234010, 43574416, 54468020, 108936040, 217872080]

約数ペア:

[(1, 217872080), (2, 108936040), (4, 54468020), (5, 43574416), (8, 27234010), (10, 21787208), (16, 13617005), (20, 10893604), (40, 5446802), (80, 2723401)]