21128055

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1117}}^1$

素因数の和:1235

約数の個数: 32

約数和(自身を含む): 36813504

約数和(自身を除く): 15685449

約数列:

[1, 3, 5, 13, 15, 39, 65, 97, 195, 291, 485, 1117, 1261, 1455, 3351, 3783, 5585, 6305, 14521, 16755, 18915, 43563, 72605, 108349, 217815, 325047, 541745, 1408537, 1625235, 4225611, 7042685, 21128055]

約数ペア:

[(1, 21128055), (3, 7042685), (5, 4225611), (13, 1625235), (15, 1408537), (39, 541745), (65, 325047), (97, 217815), (195, 108349), (291, 72605), (485, 43563), (1117, 18915), (1261, 16755), (1455, 14521), (3351, 6305), (3783, 5585)]