28007775

素因数分解:

$3^4\times 5^2\times {\mathrm{13831}}^1$

素因数の和:13853

約数の個数: 30

約数和(自身を含む): 51883832

約数和(自身を除く): 23876057

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 13831, 41493, 69155, 124479, 207465, 345775, 373437, 622395, 1037325, 1120311, 1867185, 3111975, 5601555, 9335925, 28007775]

約数ペア:

[(1, 28007775), (3, 9335925), (5, 5601555), (9, 3111975), (15, 1867185), (25, 1120311), (27, 1037325), (45, 622395), (75, 373437), (81, 345775), (135, 207465), (225, 124479), (405, 69155), (675, 41493), (2025, 13831)]