28347921

素因数分解:

$3^3\times 7^3\times {\mathrm{3061}}^1$

素因数の和:3091

約数の個数: 32

約数和(自身を含む): 48992000

約数和(自身を除く): 20644079

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 3061, 3087, 9183, 9261, 21427, 27549, 64281, 82647, 149989, 192843, 449967, 578529, 1049923, 1349901, 3149769, 4049703, 9449307, 28347921]

約数ペア:

[(1, 28347921), (3, 9449307), (7, 4049703), (9, 3149769), (21, 1349901), (27, 1049923), (49, 578529), (63, 449967), (147, 192843), (189, 149989), (343, 82647), (441, 64281), (1029, 27549), (1323, 21427), (3061, 9261), (3087, 9183)]