21156421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{751}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 25014528

約数和(自身を除く): 3858107

約数列:

[1, 11, 13, 143, 197, 751, 2167, 2561, 8261, 9763, 28171, 107393, 147947, 1627417, 1923311, 21156421]

約数ペア:

[(1, 21156421), (11, 1923311), (13, 1627417), (143, 147947), (197, 107393), (751, 28171), (2167, 9763), (2561, 8261)]