78810813

素因数分解:

$3^4\times {\mathrm{269}}^1\times {\mathrm{3617}}^1$

素因数の和:3898

約数の個数: 20

約数和(自身を含む): 118200060

約数和(自身を除く): 39389247

約数列:

[1, 3, 9, 27, 81, 269, 807, 2421, 3617, 7263, 10851, 21789, 32553, 97659, 292977, 972973, 2918919, 8756757, 26270271, 78810813]

約数ペア:

[(1, 78810813), (3, 26270271), (9, 8756757), (27, 2918919), (81, 972973), (269, 292977), (807, 97659), (2421, 32553), (3617, 21789), (7263, 10851)]