21551761

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{5281}}^1$

素因数の和:5352

約数の個数: 16

約数和(自身を含む): 27381888

約数和(自身を除く): 5830127

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 5281, 36967, 58091, 279893, 406637, 1959251, 3078823, 21551761]

約数ペア:

[(1, 21551761), (7, 3078823), (11, 1959251), (53, 406637), (77, 279893), (371, 58091), (583, 36967), (4081, 5281)]