21218409

素因数分解:

$3^3\times {\mathrm{719}}^1\times {\mathrm{1093}}^1$

素因数の和:1821

約数の個数: 16

約数和(自身を含む): 31507200

約数和(自身を除く): 10288791

約数列:

[1, 3, 9, 27, 719, 1093, 2157, 3279, 6471, 9837, 19413, 29511, 785867, 2357601, 7072803, 21218409]

約数ペア:

[(1, 21218409), (3, 7072803), (9, 2357601), (27, 785867), (719, 29511), (1093, 19413), (2157, 9837), (3279, 6471)]