20281995

素因数分解:

$3^5\times 5^1\times {\mathrm{16693}}^1$

素因数の和:16713

約数の個数: 24

約数和(自身を含む): 36459696

約数和(自身を除く): 16177701

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16693, 50079, 83465, 150237, 250395, 450711, 751185, 1352133, 2253555, 4056399, 6760665, 20281995]

約数ペア:

[(1, 20281995), (3, 6760665), (5, 4056399), (9, 2253555), (15, 1352133), (27, 751185), (45, 450711), (81, 250395), (135, 150237), (243, 83465), (405, 50079), (1215, 16693)]