21691035

素因数分解:

$3^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{947}}^1$

素因数の和:1467

約数の個数: 24

約数和(自身を含む): 37711440

約数和(自身を除く): 16020405

約数列:

[1, 3, 5, 9, 15, 45, 509, 947, 1527, 2545, 2841, 4581, 4735, 7635, 8523, 14205, 22905, 42615, 482023, 1446069, 2410115, 4338207, 7230345, 21691035]

約数ペア:

[(1, 21691035), (3, 7230345), (5, 4338207), (9, 2410115), (15, 1446069), (45, 482023), (509, 42615), (947, 22905), (1527, 14205), (2545, 8523), (2841, 7635), (4581, 4735)]