19553751

素因数分解:

$3^3\times 7^1\times {\mathrm{307}}^1\times {\mathrm{337}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 33313280

約数和(自身を除く): 13759529

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 307, 337, 921, 1011, 2149, 2359, 2763, 3033, 6447, 7077, 8289, 9099, 19341, 21231, 58023, 63693, 103459, 310377, 724213, 931131, 2172639, 2793393, 6517917, 19553751]

約数ペア:

[(1, 19553751), (3, 6517917), (7, 2793393), (9, 2172639), (21, 931131), (27, 724213), (63, 310377), (189, 103459), (307, 63693), (337, 58023), (921, 21231), (1011, 19341), (2149, 9099), (2359, 8289), (2763, 7077), (3033, 6447)]