845940520

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{32993}}^1$

素因数の和:33645

約数の個数: 32

約数和(自身を含む): 1906393320

約数和(自身を除く): 1060452800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 12820, 25640, 32993, 65986, 131972, 164965, 263944, 329930, 659860, 1319720, 21148513, 42297026, 84594052, 105742565, 169188104, 211485130, 422970260, 845940520]

約数ペア:

[(1, 845940520), (2, 422970260), (4, 211485130), (5, 169188104), (8, 105742565), (10, 84594052), (20, 42297026), (40, 21148513), (641, 1319720), (1282, 659860), (2564, 329930), (3205, 263944), (5128, 164965), (6410, 131972), (12820, 65986), (25640, 32993)]