20899845

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5879}}^1$

素因数の和:5969

約数の個数: 24

約数和(自身を含む): 36691200

約数和(自身を除く): 15791355

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5879, 17637, 29395, 52911, 88185, 264555, 464441, 1393323, 2322205, 4179969, 6966615, 20899845]

約数ペア:

[(1, 20899845), (3, 6966615), (5, 4179969), (9, 2322205), (15, 1393323), (45, 464441), (79, 264555), (237, 88185), (395, 52911), (711, 29395), (1185, 17637), (3555, 5879)]