12156789

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{787}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 17146880

約数和(自身を除く): 4990091

約数列:

[1, 3, 19, 57, 271, 787, 813, 2361, 5149, 14953, 15447, 44859, 213277, 639831, 4052263, 12156789]

約数ペア:

[(1, 12156789), (3, 4052263), (19, 639831), (57, 213277), (271, 44859), (787, 15447), (813, 14953), (2361, 5149)]