821120

素因数分解:

$2^7\times 5^1\times {\mathrm{1283}}^1$

素因数の和:1302

約数の個数: 32

約数和(自身を含む): 1964520

約数和(自身を除く): 1143400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1283, 2566, 5132, 6415, 10264, 12830, 20528, 25660, 41056, 51320, 82112, 102640, 164224, 205280, 410560, 821120]

約数ペア:

[(1, 821120), (2, 410560), (4, 205280), (5, 164224), (8, 102640), (10, 82112), (16, 51320), (20, 41056), (32, 25660), (40, 20528), (64, 12830), (80, 10264), (128, 6415), (160, 5132), (320, 2566), (640, 1283)]