21983181

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12569}}^1$

素因数の和:12636

約数の個数: 16

約数和(自身を含む): 32581440

約数和(自身を除く): 10598259

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12569, 37707, 138259, 414777, 666157, 1998471, 7327727, 21983181]

約数ペア:

[(1, 21983181), (3, 7327727), (11, 1998471), (33, 666157), (53, 414777), (159, 138259), (583, 37707), (1749, 12569)]