81178380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450991}}^1$

素因数の和:451006

約数の個数: 36

約数和(自身を含む): 246241632

約数和(自身を除く): 165063252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450991, 901982, 1352973, 1803964, 2254955, 2705946, 4058919, 4509910, 5411892, 6764865, 8117838, 9019820, 13529730, 16235676, 20294595, 27059460, 40589190, 81178380]

約数ペア:

[(1, 81178380), (2, 40589190), (3, 27059460), (4, 20294595), (5, 16235676), (6, 13529730), (9, 9019820), (10, 8117838), (12, 6764865), (15, 5411892), (18, 4509910), (20, 4058919), (30, 2705946), (36, 2254955), (45, 1803964), (60, 1352973), (90, 901982), (180, 450991)]