21984777

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{4051}}^1$

素因数の和:4130

約数の個数: 20

約数和(自身を含む): 33339856

約数和(自身を除く): 11355079

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 4051, 5427, 12153, 36459, 109377, 271417, 328131, 814251, 2442753, 7328259, 21984777]

約数ペア:

[(1, 21984777), (3, 7328259), (9, 2442753), (27, 814251), (67, 328131), (81, 271417), (201, 109377), (603, 36459), (1809, 12153), (4051, 5427)]