20218055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28277}}^1$

素因数の和:28306

約数の個数: 16

約数和(自身を含む): 28504224

約数和(自身を除く): 8286169

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28277, 141385, 311047, 367601, 1555235, 1838005, 4043611, 20218055]

約数ペア:

[(1, 20218055), (5, 4043611), (11, 1838005), (13, 1555235), (55, 367601), (65, 311047), (143, 141385), (715, 28277)]