20215953

素因数分解:

$3^3\times {\mathrm{509}}^1\times {\mathrm{1471}}^1$

素因数の和:1989

約数の個数: 16

約数和(自身を含む): 30028800

約数和(自身を除く): 9812847

約数列:

[1, 3, 9, 27, 509, 1471, 1527, 4413, 4581, 13239, 13743, 39717, 748739, 2246217, 6738651, 20215953]

約数ペア:

[(1, 20215953), (3, 6738651), (9, 2246217), (27, 748739), (509, 39717), (1471, 13743), (1527, 13239), (4413, 4581)]