21781708

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{1123}}^1$

素因数の和:1513

約数の個数: 24

約数和(自身を含む): 41196848

約数和(自身を除く): 19415140

約数列:

[1, 2, 4, 13, 26, 52, 373, 746, 1123, 1492, 2246, 4492, 4849, 9698, 14599, 19396, 29198, 58396, 418879, 837758, 1675516, 5445427, 10890854, 21781708]

約数ペア:

[(1, 21781708), (2, 10890854), (4, 5445427), (13, 1675516), (26, 837758), (52, 418879), (373, 58396), (746, 29198), (1123, 19396), (1492, 14599), (2246, 9698), (4492, 4849)]