21651245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{56237}}^1$

素因数の和:56260

約数の個数: 16

約数和(自身を含む): 32393088

約数和(自身を除く): 10741843

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 56237, 281185, 393659, 618607, 1968295, 3093035, 4330249, 21651245]

約数ペア:

[(1, 21651245), (5, 4330249), (7, 3093035), (11, 1968295), (35, 618607), (55, 393659), (77, 281185), (385, 56237)]