19681473

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1$

素因数の和:597

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 12251967

約数列:

[1, 3, 7, 19, 21, 57, 107, 133, 321, 399, 461, 749, 1383, 2033, 2247, 3227, 6099, 8759, 9681, 14231, 26277, 42693, 49327, 61313, 147981, 183939, 345289, 937213, 1035867, 2811639, 6560491, 19681473]

約数ペア:

[(1, 19681473), (3, 6560491), (7, 2811639), (19, 1035867), (21, 937213), (57, 345289), (107, 183939), (133, 147981), (321, 61313), (399, 49327), (461, 42693), (749, 26277), (1383, 14231), (2033, 9681), (2247, 8759), (3227, 6099)]