217156730

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{63311}}^1$

素因数の和:63339

約数の個数: 32

約数和(自身を含む): 455846400

約数和(自身を除く): 238689670

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 63311, 126622, 316555, 443177, 633110, 886354, 2215885, 3102239, 4431770, 6204478, 15511195, 21715673, 31022390, 43431346, 108578365, 217156730]

約数ペア:

[(1, 217156730), (2, 108578365), (5, 43431346), (7, 31022390), (10, 21715673), (14, 15511195), (35, 6204478), (49, 4431770), (70, 3102239), (98, 2215885), (245, 886354), (343, 633110), (490, 443177), (686, 316555), (1715, 126622), (3430, 63311)]