800000080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{909091}}^1$

素因数の和:909115

約数の個数: 40

約数和(自身を含む): 2029093344

約数和(自身を除く): 1229093264

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 909091, 1818182, 3636364, 4545455, 7272728, 9090910, 10000001, 14545456, 18181820, 20000002, 36363640, 40000004, 50000005, 72727280, 80000008, 100000010, 160000016, 200000020, 400000040, 800000080]

約数ペア:

[(1, 800000080), (2, 400000040), (4, 200000020), (5, 160000016), (8, 100000010), (10, 80000008), (11, 72727280), (16, 50000005), (20, 40000004), (22, 36363640), (40, 20000002), (44, 18181820), (55, 14545456), (80, 10000001), (88, 9090910), (110, 7272728), (176, 4545455), (220, 3636364), (440, 1818182), (880, 909091)]