389645720

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{34421}}^1$

素因数の和:34715

約数の個数: 32

約数和(自身を含む): 879826320

約数和(自身を除く): 490180600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 2264, 2830, 5660, 11320, 34421, 68842, 137684, 172105, 275368, 344210, 688420, 1376840, 9741143, 19482286, 38964572, 48705715, 77929144, 97411430, 194822860, 389645720]

約数ペア:

[(1, 389645720), (2, 194822860), (4, 97411430), (5, 77929144), (8, 48705715), (10, 38964572), (20, 19482286), (40, 9741143), (283, 1376840), (566, 688420), (1132, 344210), (1415, 275368), (2264, 172105), (2830, 137684), (5660, 68842), (11320, 34421)]