21578739

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79043}}^1$

素因数の和:79066

約数の個数: 16

約数和(自身を含む): 35411712

約数和(自身を除く): 13832973

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 79043, 237129, 553301, 1027559, 1659903, 3082677, 7192913, 21578739]

約数ペア:

[(1, 21578739), (3, 7192913), (7, 3082677), (13, 1659903), (21, 1027559), (39, 553301), (91, 237129), (273, 79043)]