28887921

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{5323}}^1$

素因数の和:5402

約数の個数: 20

約数和(自身を含む): 43805872

約数和(自身を除く): 14917951

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 5323, 5427, 15969, 47907, 143721, 356641, 431163, 1069923, 3209769, 9629307, 28887921]

約数ペア:

[(1, 28887921), (3, 9629307), (9, 3209769), (27, 1069923), (67, 431163), (81, 356641), (201, 143721), (603, 47907), (1809, 15969), (5323, 5427)]