28279890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1579}}^1$

素因数の和:1791

約数の個数: 48

約数和(自身を含む): 73944000

約数和(自身を除く): 45664110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 199, 398, 597, 995, 1194, 1579, 1791, 1990, 2985, 3158, 3582, 4737, 5970, 7895, 8955, 9474, 14211, 15790, 17910, 23685, 28422, 47370, 71055, 142110, 314221, 628442, 942663, 1571105, 1885326, 2827989, 3142210, 4713315, 5655978, 9426630, 14139945, 28279890]

約数ペア:

[(1, 28279890), (2, 14139945), (3, 9426630), (5, 5655978), (6, 4713315), (9, 3142210), (10, 2827989), (15, 1885326), (18, 1571105), (30, 942663), (45, 628442), (90, 314221), (199, 142110), (398, 71055), (597, 47370), (995, 28422), (1194, 23685), (1579, 17910), (1791, 15790), (1990, 14211), (2985, 9474), (3158, 8955), (3582, 7895), (4737, 5970)]