64866815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1249}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 90720000

約数和(自身を除く): 25853185

約数列:

[1, 5, 13, 17, 47, 65, 85, 221, 235, 611, 799, 1105, 1249, 3055, 3995, 6245, 10387, 16237, 21233, 51935, 58703, 81185, 106165, 276029, 293515, 763139, 997951, 1380145, 3815695, 4989755, 12973363, 64866815]

約数ペア:

[(1, 64866815), (5, 12973363), (13, 4989755), (17, 3815695), (47, 1380145), (65, 997951), (85, 763139), (221, 293515), (235, 276029), (611, 106165), (799, 81185), (1105, 58703), (1249, 51935), (3055, 21233), (3995, 16237), (6245, 10387)]