66408080

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1283}}^1$

素因数の和:1943

約数の個数: 40

約数和(自身を含む): 154757952

約数和(自身を除く): 88349872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1283, 1294, 2566, 2588, 3235, 5132, 5176, 6415, 6470, 10264, 10352, 12830, 12940, 20528, 25660, 25880, 51320, 51760, 102640, 830101, 1660202, 3320404, 4150505, 6640808, 8301010, 13281616, 16602020, 33204040, 66408080]

約数ペア:

[(1, 66408080), (2, 33204040), (4, 16602020), (5, 13281616), (8, 8301010), (10, 6640808), (16, 4150505), (20, 3320404), (40, 1660202), (80, 830101), (647, 102640), (1283, 51760), (1294, 51320), (2566, 25880), (2588, 25660), (3235, 20528), (5132, 12940), (5176, 12830), (6415, 10352), (6470, 10264)]