21280413

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5419}}^1$

素因数の和:5457

約数の個数: 32

約数和(自身を含む): 37463040

約数和(自身を除く): 16182627

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5419, 16257, 37933, 59609, 92123, 113799, 178827, 276369, 417263, 644861, 1013353, 1251789, 1934583, 3040059, 7093471, 21280413]

約数ペア:

[(1, 21280413), (3, 7093471), (7, 3040059), (11, 1934583), (17, 1251789), (21, 1013353), (33, 644861), (51, 417263), (77, 276369), (119, 178827), (187, 113799), (231, 92123), (357, 59609), (561, 37933), (1309, 16257), (3927, 5419)]