21148045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7237235

約数列:

[1, 5, 19, 31, 43, 95, 155, 167, 215, 589, 817, 835, 1333, 2945, 3173, 4085, 5177, 6665, 7181, 15865, 25327, 25885, 35905, 98363, 126635, 136439, 222611, 491815, 682195, 1113055, 4229609, 21148045]

約数ペア:

[(1, 21148045), (5, 4229609), (19, 1113055), (31, 682195), (43, 491815), (95, 222611), (155, 136439), (167, 126635), (215, 98363), (589, 35905), (817, 25885), (835, 25327), (1333, 15865), (2945, 7181), (3173, 6665), (4085, 5177)]