178879720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109073}}^1$

素因数の和:109125

約数の個数: 32

約数和(自身を含む): 412299720

約数和(自身を除く): 233420000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 109073, 218146, 436292, 545365, 872584, 1090730, 2181460, 4362920, 4471993, 8943986, 17887972, 22359965, 35775944, 44719930, 89439860, 178879720]

約数ペア:

[(1, 178879720), (2, 89439860), (4, 44719930), (5, 35775944), (8, 22359965), (10, 17887972), (20, 8943986), (40, 4471993), (41, 4362920), (82, 2181460), (164, 1090730), (205, 872584), (328, 545365), (410, 436292), (820, 218146), (1640, 109073)]