21479185

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47207}}^1$

素因数の和:47232

約数の個数: 16

約数和(自身を含む): 31723776

約数和(自身を除く): 10244591

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 47207, 236035, 330449, 613691, 1652245, 3068455, 4295837, 21479185]

約数ペア:

[(1, 21479185), (5, 4295837), (7, 3068455), (13, 1652245), (35, 613691), (65, 330449), (91, 236035), (455, 47207)]