28449040

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1787}}^1$

素因数の和:1999

約数の個数: 40

約数和(自身を含む): 66513600

約数和(自身を除く): 38064560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1787, 1990, 3184, 3574, 3980, 7148, 7960, 8935, 14296, 15920, 17870, 28592, 35740, 71480, 142960, 355613, 711226, 1422452, 1778065, 2844904, 3556130, 5689808, 7112260, 14224520, 28449040]

約数ペア:

[(1, 28449040), (2, 14224520), (4, 7112260), (5, 5689808), (8, 3556130), (10, 2844904), (16, 1778065), (20, 1422452), (40, 711226), (80, 355613), (199, 142960), (398, 71480), (796, 35740), (995, 28592), (1592, 17870), (1787, 15920), (1990, 14296), (3184, 8935), (3574, 7960), (3980, 7148)]