20917195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16937}}^1$

素因数の和:16974

約数の個数: 16

約数和(自身を含む): 28455840

約数和(自身を除く): 7538645

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16937, 84685, 220181, 321803, 1100905, 1609015, 4183439, 20917195]

約数ペア:

[(1, 20917195), (5, 4183439), (13, 1609015), (19, 1100905), (65, 321803), (95, 220181), (247, 84685), (1235, 16937)]