21965481

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 32708000

約数和(自身を除く): 10742519

約数列:

[1, 3, 9, 67, 73, 201, 219, 499, 603, 657, 1497, 4491, 4891, 14673, 33433, 36427, 44019, 100299, 109281, 300897, 327843, 2440609, 7321827, 21965481]

約数ペア:

[(1, 21965481), (3, 7321827), (9, 2440609), (67, 327843), (73, 300897), (201, 109281), (219, 100299), (499, 44019), (603, 36427), (657, 33433), (1497, 14673), (4491, 4891)]