21202695

素因数分解:

$3^3\times 5^1\times {\mathrm{157057}}^1$

素因数の和:157071

約数の個数: 16

約数和(自身を含む): 37693920

約数和(自身を除く): 16491225

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157057, 471171, 785285, 1413513, 2355855, 4240539, 7067565, 21202695]

約数ペア:

[(1, 21202695), (3, 7067565), (5, 4240539), (9, 2355855), (15, 1413513), (27, 785285), (45, 471171), (135, 157057)]