21951891

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6949}}^1$

素因数の和:6977

約数の個数: 24

約数和(自身を含む): 35417200

約数和(自身を除く): 13465309

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6949, 20847, 62541, 90337, 187623, 271011, 562869, 813033, 1688607, 2439099, 7317297, 21951891]

約数ペア:

[(1, 21951891), (3, 7317297), (9, 2439099), (13, 1688607), (27, 813033), (39, 562869), (81, 271011), (117, 187623), (243, 90337), (351, 62541), (1053, 20847), (3159, 6949)]