21542997

素因数分解:

$3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1451}}^1$

素因数の和:1569

約数の個数: 24

約数和(自身を含む): 33767712

約数和(自身を除く): 12224715

約数列:

[1, 3, 7, 21, 49, 101, 147, 303, 707, 1451, 2121, 4353, 4949, 10157, 14847, 30471, 71099, 146551, 213297, 439653, 1025857, 3077571, 7180999, 21542997]

約数ペア:

[(1, 21542997), (3, 7180999), (7, 3077571), (21, 1025857), (49, 439653), (101, 213297), (147, 146551), (303, 71099), (707, 30471), (1451, 14847), (2121, 10157), (4353, 4949)]