21073203

素因数分解:

$3^6\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:366

約数の個数: 28

約数和(自身を含む): 31976808

約数和(自身を除く): 10903605

約数列:

[1, 3, 9, 27, 81, 137, 211, 243, 411, 633, 729, 1233, 1899, 3699, 5697, 11097, 17091, 28907, 33291, 51273, 86721, 99873, 153819, 260163, 780489, 2341467, 7024401, 21073203]

約数ペア:

[(1, 21073203), (3, 7024401), (9, 2341467), (27, 780489), (81, 260163), (137, 153819), (211, 99873), (243, 86721), (411, 51273), (633, 33291), (729, 28907), (1233, 17091), (1899, 11097), (3699, 5697)]