20725587

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 31082480

約数和(自身を除く): 10356893

約数列:

[1, 3, 9, 37, 109, 111, 327, 333, 571, 981, 1713, 4033, 5139, 12099, 21127, 36297, 62239, 63381, 186717, 190143, 560151, 2302843, 6908529, 20725587]

約数ペア:

[(1, 20725587), (3, 6908529), (9, 2302843), (37, 560151), (109, 190143), (111, 186717), (327, 63381), (333, 62239), (571, 36297), (981, 21127), (1713, 12099), (4033, 5139)]