678470680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{997751}}^1$

素因数の和:997779

約数の個数: 32

約数和(自身を含む): 1616358240

約数和(自身を除く): 937887560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 997751, 1995502, 3991004, 4988755, 7982008, 9977510, 16961767, 19955020, 33923534, 39910040, 67847068, 84808835, 135694136, 169617670, 339235340, 678470680]

約数ペア:

[(1, 678470680), (2, 339235340), (4, 169617670), (5, 135694136), (8, 84808835), (10, 67847068), (17, 39910040), (20, 33923534), (34, 19955020), (40, 16961767), (68, 9977510), (85, 7982008), (136, 4988755), (170, 3991004), (340, 1995502), (680, 997751)]