21989055

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1877}}^1$

素因数の和:1967

約数の個数: 32

約数和(自身を含む): 38942208

約数和(自身を除く): 16953153

約数列:

[1, 3, 5, 11, 15, 33, 55, 71, 165, 213, 355, 781, 1065, 1877, 2343, 3905, 5631, 9385, 11715, 20647, 28155, 61941, 103235, 133267, 309705, 399801, 666335, 1465937, 1999005, 4397811, 7329685, 21989055]

約数ペア:

[(1, 21989055), (3, 7329685), (5, 4397811), (11, 1999005), (15, 1465937), (33, 666335), (55, 399801), (71, 309705), (165, 133267), (213, 103235), (355, 61941), (781, 28155), (1065, 20647), (1877, 11715), (2343, 9385), (3905, 5631)]