64378015

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{1621}}^1$

素因数の和:1699

約数の個数: 24

約数和(自身を含む): 85485888

約数和(自身を除く): 21107873

約数列:

[1, 5, 13, 47, 65, 169, 235, 611, 845, 1621, 3055, 7943, 8105, 21073, 39715, 76187, 105365, 273949, 380935, 990431, 1369745, 4952155, 12875603, 64378015]

約数ペア:

[(1, 64378015), (5, 12875603), (13, 4952155), (47, 1369745), (65, 990431), (169, 380935), (235, 273949), (611, 105365), (845, 76187), (1621, 39715), (3055, 21073), (7943, 8105)]