20957103

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{7121}}^1$

素因数の和:7239

約数の個数: 16

約数和(自身を含む): 31336800

約数和(自身を除く): 10379697

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 7121, 21363, 64089, 192267, 776189, 2328567, 6985701, 20957103]

約数ペア:

[(1, 20957103), (3, 6985701), (9, 2328567), (27, 776189), (109, 192267), (327, 64089), (981, 21363), (2943, 7121)]