28520680

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3583}}^1$

素因数の和:3793

約数の個数: 32

約数和(自身を含む): 64512000

約数和(自身を除く): 35991320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3583, 3980, 7166, 7960, 14332, 17915, 28664, 35830, 71660, 143320, 713017, 1426034, 2852068, 3565085, 5704136, 7130170, 14260340, 28520680]

約数ペア:

[(1, 28520680), (2, 14260340), (4, 7130170), (5, 5704136), (8, 3565085), (10, 2852068), (20, 1426034), (40, 713017), (199, 143320), (398, 71660), (796, 35830), (995, 28664), (1592, 17915), (1990, 14332), (3583, 7960), (3980, 7166)]