19689957

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8447}}^1$

素因数の和:8497

約数の個数: 24

約数和(自身を含む): 33386496

約数和(自身を除く): 13696539

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8447, 25341, 59129, 76023, 177387, 312539, 532161, 937617, 2187773, 2812851, 6563319, 19689957]

約数ペア:

[(1, 19689957), (3, 6563319), (7, 2812851), (9, 2187773), (21, 937617), (37, 532161), (63, 312539), (111, 177387), (259, 76023), (333, 59129), (777, 25341), (2331, 8447)]