16888221

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4001}}^1$

素因数の和:4081

約数の個数: 24

約数和(自身を含む): 28302144

約数和(自身を除く): 11413923

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4001, 4221, 12003, 28007, 36009, 84021, 252063, 268067, 804201, 1876469, 2412603, 5629407, 16888221]

約数ペア:

[(1, 16888221), (3, 5629407), (7, 2412603), (9, 1876469), (21, 804201), (63, 268067), (67, 252063), (201, 84021), (469, 36009), (603, 28007), (1407, 12003), (4001, 4221)]