16920393

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{42407}}^1$

素因数の和:42436

約数の個数: 16

約数和(自身を含む): 27141120

約数和(自身を除く): 10220727

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 42407, 127221, 296849, 805733, 890547, 2417199, 5640131, 16920393]

約数ペア:

[(1, 16920393), (3, 5640131), (7, 2417199), (19, 890547), (21, 805733), (57, 296849), (133, 127221), (399, 42407)]