31199985

素因数分解:

$3^5\times 5^1\times {\mathrm{25679}}^1$

素因数の和:25699

約数の個数: 24

約数和(自身を含む): 56085120

約数和(自身を除く): 24885135

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 25679, 77037, 128395, 231111, 385185, 693333, 1155555, 2079999, 3466665, 6239997, 10399995, 31199985]

約数ペア:

[(1, 31199985), (3, 10399995), (5, 6239997), (9, 3466665), (15, 2079999), (27, 1155555), (45, 693333), (81, 385185), (135, 231111), (243, 128395), (405, 77037), (1215, 25679)]