20512057155

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^2\times {\mathrm{383}}^1\times {\mathrm{1931}}^1$

素因数の和:2408

約数の個数: 48

約数和(自身を含む): 33705455616

約数和(自身を除く): 13193398461

約数列:

[1, 3, 5, 15, 43, 129, 215, 383, 645, 1149, 1849, 1915, 1931, 5547, 5745, 5793, 9245, 9655, 16469, 27735, 28965, 49407, 82345, 83033, 247035, 249099, 415165, 708167, 739573, 1245495, 2124501, 2218719, 3540835, 3570419, 3697865, 10622505, 10711257, 11093595, 17852095, 31801639, 53556285, 95404917, 159008195, 477024585, 1367470477, 4102411431, 6837352385, 20512057155]

約数ペア:

[(1, 20512057155), (3, 6837352385), (5, 4102411431), (15, 1367470477), (43, 477024585), (129, 159008195), (215, 95404917), (383, 53556285), (645, 31801639), (1149, 17852095), (1849, 11093595), (1915, 10711257), (1931, 10622505), (5547, 3697865), (5745, 3570419), (5793, 3540835), (9245, 2218719), (9655, 2124501), (16469, 1245495), (27735, 739573), (28965, 708167), (49407, 415165), (82345, 249099), (83033, 247035)]