81271916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{787}}^1\times {\mathrm{2347}}^1$

素因数の和:3149

約数の個数: 24

約数和(自身を含む): 155418816

約数和(自身を除く): 74146900

約数列:

[1, 2, 4, 11, 22, 44, 787, 1574, 2347, 3148, 4694, 8657, 9388, 17314, 25817, 34628, 51634, 103268, 1847089, 3694178, 7388356, 20317979, 40635958, 81271916]

約数ペア:

[(1, 81271916), (2, 40635958), (4, 20317979), (11, 7388356), (22, 3694178), (44, 1847089), (787, 103268), (1574, 51634), (2347, 34628), (3148, 25817), (4694, 17314), (8657, 9388)]