20281509

素因数分解:

$3^6\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:708

約数の個数: 28

約数和(自身を含む): 31163616

約数和(自身を除く): 10882107

約数列:

[1, 3, 9, 27, 43, 81, 129, 243, 387, 647, 729, 1161, 1941, 3483, 5823, 10449, 17469, 27821, 31347, 52407, 83463, 157221, 250389, 471663, 751167, 2253501, 6760503, 20281509]

約数ペア:

[(1, 20281509), (3, 6760503), (9, 2253501), (27, 751167), (43, 471663), (81, 250389), (129, 157221), (243, 83463), (387, 52407), (647, 31347), (729, 27821), (1161, 17469), (1941, 10449), (3483, 5823)]