21711345

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 36457344

約数和(自身を除く): 14745999

約数列:

[1, 3, 5, 15, 41, 43, 123, 129, 205, 215, 615, 645, 821, 1763, 2463, 4105, 5289, 8815, 12315, 26445, 33661, 35303, 100983, 105909, 168305, 176515, 504915, 529545, 1447423, 4342269, 7237115, 21711345]

約数ペア:

[(1, 21711345), (3, 7237115), (5, 4342269), (15, 1447423), (41, 529545), (43, 504915), (123, 176515), (129, 168305), (205, 105909), (215, 100983), (615, 35303), (645, 33661), (821, 26445), (1763, 12315), (2463, 8815), (4105, 5289)]