256548680

素因数分解:

$2^3\times 5^1\times {\mathrm{1283}}^1\times {\mathrm{4999}}^1$

素因数の和:6293

約数の個数: 32

約数和(自身を含む): 577800000

約数和(自身を除く): 321251320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1283, 2566, 4999, 5132, 6415, 9998, 10264, 12830, 19996, 24995, 25660, 39992, 49990, 51320, 99980, 199960, 6413717, 12827434, 25654868, 32068585, 51309736, 64137170, 128274340, 256548680]

約数ペア:

[(1, 256548680), (2, 128274340), (4, 64137170), (5, 51309736), (8, 32068585), (10, 25654868), (20, 12827434), (40, 6413717), (1283, 199960), (2566, 99980), (4999, 51320), (5132, 49990), (6415, 39992), (9998, 25660), (10264, 24995), (12830, 19996)]