21021417

素因数分解:

$3^3\times {\mathrm{137}}^1\times {\mathrm{5683}}^1$

素因数の和:5829

約数の個数: 16

約数和(自身を含む): 31375680

約数和(自身を除く): 10354263

約数列:

[1, 3, 9, 27, 137, 411, 1233, 3699, 5683, 17049, 51147, 153441, 778571, 2335713, 7007139, 21021417]

約数ペア:

[(1, 21021417), (3, 7007139), (9, 2335713), (27, 778571), (137, 153441), (411, 51147), (1233, 17049), (3699, 5683)]