290895215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{523}}^1$

素因数の和:783

約数の個数: 32

約数和(自身を含む): 387340800

約数和(自身を除く): 96445585

約数列:

[1, 5, 13, 43, 65, 199, 215, 523, 559, 995, 2587, 2615, 2795, 6799, 8557, 12935, 22489, 33995, 42785, 104077, 111241, 112445, 292357, 520385, 556205, 1353001, 1461785, 4475311, 6765005, 22376555, 58179043, 290895215]

約数ペア:

[(1, 290895215), (5, 58179043), (13, 22376555), (43, 6765005), (65, 4475311), (199, 1461785), (215, 1353001), (523, 556205), (559, 520385), (995, 292357), (2587, 112445), (2615, 111241), (2795, 104077), (6799, 42785), (8557, 33995), (12935, 22489)]