21181435

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{3739}}^1$

素因数の和:3858

約数の個数: 16

約数和(自身を含む): 28005120

約数和(自身を除く): 6823685

約数列:

[1, 5, 11, 55, 103, 515, 1133, 3739, 5665, 18695, 41129, 205645, 385117, 1925585, 4236287, 21181435]

約数ペア:

[(1, 21181435), (5, 4236287), (11, 1925585), (55, 385117), (103, 205645), (515, 41129), (1133, 18695), (3739, 5665)]