665480

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 1520640

約数和(自身を除く): 855160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 131, 254, 262, 508, 524, 635, 655, 1016, 1048, 1270, 1310, 2540, 2620, 5080, 5240, 16637, 33274, 66548, 83185, 133096, 166370, 332740, 665480]

約数ペア:

[(1, 665480), (2, 332740), (4, 166370), (5, 133096), (8, 83185), (10, 66548), (20, 33274), (40, 16637), (127, 5240), (131, 5080), (254, 2620), (262, 2540), (508, 1310), (524, 1270), (635, 1048), (655, 1016)]