256497410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{63647}}^1$

素因数の和:63698

約数の個数: 32

約数和(自身を含む): 513257472

約数和(自身を除く): 256760062

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 63647, 127294, 318235, 636470, 827411, 1654822, 1973057, 3946114, 4137055, 8274110, 9865285, 19730570, 25649741, 51299482, 128248705, 256497410]

約数ペア:

[(1, 256497410), (2, 128248705), (5, 51299482), (10, 25649741), (13, 19730570), (26, 9865285), (31, 8274110), (62, 4137055), (65, 3946114), (130, 1973057), (155, 1654822), (310, 827411), (403, 636470), (806, 318235), (2015, 127294), (4030, 63647)]