21906645

素因数分解:

$3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{13649}}^1$

素因数の和:13764

約数の個数: 16

約数和(自身を含む): 35380800

約数和(自身を除く): 13474155

約数列:

[1, 3, 5, 15, 107, 321, 535, 1605, 13649, 40947, 68245, 204735, 1460443, 4381329, 7302215, 21906645]

約数ペア:

[(1, 21906645), (3, 7302215), (5, 4381329), (15, 1460443), (107, 204735), (321, 68245), (535, 40947), (1605, 13649)]