21764821

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1019}}^1$

素因数の和:1116

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 2911019

約数列:

[1, 13, 31, 53, 403, 689, 1019, 1643, 13247, 21359, 31589, 54007, 410657, 702091, 1674217, 21764821]

約数ペア:

[(1, 21764821), (13, 1674217), (31, 702091), (53, 410657), (403, 54007), (689, 31589), (1019, 21359), (1643, 13247)]