247788680

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{27779}}^1$

素因数の和:28013

約数の個数: 32

約数和(自身を含む): 560044800

約数和(自身を除く): 312256120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 27779, 55558, 111116, 138895, 222232, 277790, 555580, 1111160, 6194717, 12389434, 24778868, 30973585, 49557736, 61947170, 123894340, 247788680]

約数ペア:

[(1, 247788680), (2, 123894340), (4, 61947170), (5, 49557736), (8, 30973585), (10, 24778868), (20, 12389434), (40, 6194717), (223, 1111160), (446, 555580), (892, 277790), (1115, 222232), (1784, 138895), (2230, 111116), (4460, 55558), (8920, 27779)]