28313720

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3557}}^1$

素因数の和:3767

約数の個数: 32

約数和(自身を含む): 64044000

約数和(自身を除く): 35730280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3557, 3980, 7114, 7960, 14228, 17785, 28456, 35570, 71140, 142280, 707843, 1415686, 2831372, 3539215, 5662744, 7078430, 14156860, 28313720]

約数ペア:

[(1, 28313720), (2, 14156860), (4, 7078430), (5, 5662744), (8, 3539215), (10, 2831372), (20, 1415686), (40, 707843), (199, 142280), (398, 71140), (796, 35570), (995, 28456), (1592, 17785), (1990, 14228), (3557, 7960), (3980, 7114)]