21699349

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 27115008

約数和(自身を除く): 5415659

約数列:

[1, 7, 19, 31, 133, 217, 277, 361, 589, 1939, 2527, 4123, 5263, 8587, 11191, 36841, 60109, 78337, 99997, 163153, 699979, 1142071, 3099907, 21699349]

約数ペア:

[(1, 21699349), (7, 3099907), (19, 1142071), (31, 699979), (133, 163153), (217, 99997), (277, 78337), (361, 60109), (589, 36841), (1939, 11191), (2527, 8587), (4123, 5263)]