28329640

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3559}}^1$

素因数の和:3769

約数の個数: 32

約数和(自身を含む): 64080000

約数和(自身を除く): 35750360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3559, 3980, 7118, 7960, 14236, 17795, 28472, 35590, 71180, 142360, 708241, 1416482, 2832964, 3541205, 5665928, 7082410, 14164820, 28329640]

約数ペア:

[(1, 28329640), (2, 14164820), (4, 7082410), (5, 5665928), (8, 3541205), (10, 2832964), (20, 1416482), (40, 708241), (199, 142360), (398, 71180), (796, 35590), (995, 28472), (1592, 17795), (1990, 14236), (3559, 7960), (3980, 7118)]