21648303

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3989}}^1$

素因数の和:4068

約数の個数: 20

約数和(自身を含む): 32829720

約数和(自身を除く): 11181417

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3989, 5427, 11967, 35901, 107703, 267263, 323109, 801789, 2405367, 7216101, 21648303]

約数ペア:

[(1, 21648303), (3, 7216101), (9, 2405367), (27, 801789), (67, 323109), (81, 267263), (201, 107703), (603, 35901), (1809, 11967), (3989, 5427)]