640008

素因数分解:

$2^3\times 3^3\times {\mathrm{2963}}^1$

素因数の和:2978

約数の個数: 32

約数和(自身を含む): 1778400

約数和(自身を除く): 1138392

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 2963, 5926, 8889, 11852, 17778, 23704, 26667, 35556, 53334, 71112, 80001, 106668, 160002, 213336, 320004, 640008]

約数ペア:

[(1, 640008), (2, 320004), (3, 213336), (4, 160002), (6, 106668), (8, 80001), (9, 71112), (12, 53334), (18, 35556), (24, 26667), (27, 23704), (36, 17778), (54, 11852), (72, 8889), (108, 5926), (216, 2963)]