17620821

素因数分解:

$3^4\times {\mathrm{211}}^1\times {\mathrm{1031}}^1$

素因数の和:1254

約数の個数: 20

約数和(自身を含む): 26472864

約数和(自身を除く): 8852043

約数列:

[1, 3, 9, 27, 81, 211, 633, 1031, 1899, 3093, 5697, 9279, 17091, 27837, 83511, 217541, 652623, 1957869, 5873607, 17620821]

約数ペア:

[(1, 17620821), (3, 5873607), (9, 1957869), (27, 652623), (81, 217541), (211, 83511), (633, 27837), (1031, 17091), (1899, 9279), (3093, 5697)]