254373340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{978359}}^1$

素因数の和:978381

約数の個数: 24

約数和(自身を含む): 575275680

約数和(自身を除く): 320902340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 978359, 1956718, 3913436, 4891795, 9783590, 12718667, 19567180, 25437334, 50874668, 63593335, 127186670, 254373340]

約数ペア:

[(1, 254373340), (2, 127186670), (4, 63593335), (5, 50874668), (10, 25437334), (13, 19567180), (20, 12718667), (26, 9783590), (52, 4891795), (65, 3913436), (130, 1956718), (260, 978359)]