21897747

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3461}}^1$

素因数の和:3523

約数の個数: 24

約数和(自身を含む): 34204560

約数和(自身を除く): 12306813

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 333, 703, 2109, 3461, 6327, 10383, 31149, 65759, 128057, 197277, 384171, 591831, 1152513, 2433083, 7299249, 21897747]

約数ペア:

[(1, 21897747), (3, 7299249), (9, 2433083), (19, 1152513), (37, 591831), (57, 384171), (111, 197277), (171, 128057), (333, 65759), (703, 31149), (2109, 10383), (3461, 6327)]