397760840

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{22447}}^1$

素因数の和:22901

約数の個数: 32

約数和(自身を含む): 897022080

約数和(自身を除く): 499261240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1772, 2215, 3544, 4430, 8860, 17720, 22447, 44894, 89788, 112235, 179576, 224470, 448940, 897880, 9944021, 19888042, 39776084, 49720105, 79552168, 99440210, 198880420, 397760840]

約数ペア:

[(1, 397760840), (2, 198880420), (4, 99440210), (5, 79552168), (8, 49720105), (10, 39776084), (20, 19888042), (40, 9944021), (443, 897880), (886, 448940), (1772, 224470), (2215, 179576), (3544, 112235), (4430, 89788), (8860, 44894), (17720, 22447)]