21088743

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{947}}^1$

素因数の和:1534

約数の個数: 16

約数和(自身を含む): 30366336

約数和(自身を除く): 9277593

約数列:

[1, 3, 13, 39, 571, 947, 1713, 2841, 7423, 12311, 22269, 36933, 540737, 1622211, 7029581, 21088743]

約数ペア:

[(1, 21088743), (3, 7029581), (13, 1622211), (39, 540737), (571, 36933), (947, 22269), (1713, 12311), (2841, 7423)]