20557677

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{769}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 33510400

約数和(自身を除く): 12952723

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 769, 1273, 1407, 2307, 3819, 5383, 8911, 14611, 16149, 26733, 43833, 51523, 102277, 154569, 306831, 360661, 978937, 1081983, 2936811, 6852559, 20557677]

約数ペア:

[(1, 20557677), (3, 6852559), (7, 2936811), (19, 1081983), (21, 978937), (57, 360661), (67, 306831), (133, 154569), (201, 102277), (399, 51523), (469, 43833), (769, 26733), (1273, 16149), (1407, 14611), (2307, 8911), (3819, 5383)]