21185541

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4211}}^1$

素因数の和:4273

約数の個数: 24

約数和(自身を含む): 33729696

約数和(自身を除く): 12544155

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4211, 5031, 12633, 37899, 54743, 164229, 181073, 492687, 543219, 1629657, 2353949, 7061847, 21185541]

約数ペア:

[(1, 21185541), (3, 7061847), (9, 2353949), (13, 1629657), (39, 543219), (43, 492687), (117, 181073), (129, 164229), (387, 54743), (559, 37899), (1677, 12633), (4211, 5031)]