28128867

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 41065200

約数和(自身を除く): 12936333

約数列:

[1, 3, 13, 39, 109, 169, 327, 507, 509, 1417, 1527, 4251, 6617, 18421, 19851, 55263, 55481, 86021, 166443, 258063, 721253, 2163759, 9376289, 28128867]

約数ペア:

[(1, 28128867), (3, 9376289), (13, 2163759), (39, 721253), (109, 258063), (169, 166443), (327, 86021), (507, 55481), (509, 55263), (1417, 19851), (1527, 18421), (4251, 6617)]