91172080

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2239}}^1$

素因数の和:2761

約数の個数: 40

約数和(自身を含む): 212486400

約数和(自身を除く): 121314320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2239, 2545, 4072, 4478, 5090, 8144, 8956, 10180, 11195, 17912, 20360, 22390, 35824, 40720, 44780, 89560, 179120, 1139651, 2279302, 4558604, 5698255, 9117208, 11396510, 18234416, 22793020, 45586040, 91172080]

約数ペア:

[(1, 91172080), (2, 45586040), (4, 22793020), (5, 18234416), (8, 11396510), (10, 9117208), (16, 5698255), (20, 4558604), (40, 2279302), (80, 1139651), (509, 179120), (1018, 89560), (2036, 44780), (2239, 40720), (2545, 35824), (4072, 22390), (4478, 20360), (5090, 17912), (8144, 11195), (8956, 10180)]