217171801

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{613}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 280101888

約数和(自身を除く): 62930087

約数列:

[1, 7, 11, 43, 77, 107, 301, 473, 613, 749, 1177, 3311, 4291, 4601, 6743, 8239, 26359, 32207, 47201, 50611, 65591, 184513, 289949, 354277, 459137, 721501, 2029643, 2820413, 5050507, 19742891, 31024543, 217171801]

約数ペア:

[(1, 217171801), (7, 31024543), (11, 19742891), (43, 5050507), (77, 2820413), (107, 2029643), (301, 721501), (473, 459137), (613, 354277), (749, 289949), (1177, 184513), (3311, 65591), (4291, 50611), (4601, 47201), (6743, 32207), (8239, 26359)]