20638281

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{709}}^1$

素因数の和:1056

約数の個数: 16

約数和(自身を含む): 28536320

約数和(自身を除く): 7898039

約数列:

[1, 3, 31, 93, 313, 709, 939, 2127, 9703, 21979, 29109, 65937, 221917, 665751, 6879427, 20638281]

約数ペア:

[(1, 20638281), (3, 6879427), (31, 665751), (93, 221917), (313, 65937), (709, 29109), (939, 21979), (2127, 9703)]