21241415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 8514745

約数列:

[1, 5, 13, 17, 47, 65, 85, 221, 235, 409, 611, 799, 1105, 2045, 3055, 3995, 5317, 6953, 10387, 19223, 26585, 34765, 51935, 90389, 96115, 249899, 326791, 451945, 1249495, 1633955, 4248283, 21241415]

約数ペア:

[(1, 21241415), (5, 4248283), (13, 1633955), (17, 1249495), (47, 451945), (65, 326791), (85, 249899), (221, 96115), (235, 90389), (409, 51935), (611, 34765), (799, 26585), (1105, 19223), (2045, 10387), (3055, 6953), (3995, 5317)]