21131708

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13109}}^1$

素因数の和:13157

約数の個数: 24

約数和(自身を含む): 41112960

約数和(自身を除く): 19981252

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13109, 26218, 52436, 170417, 340834, 406379, 681668, 812758, 1625516, 5282927, 10565854, 21131708]

約数ペア:

[(1, 21131708), (2, 10565854), (4, 5282927), (13, 1625516), (26, 812758), (31, 681668), (52, 406379), (62, 340834), (124, 170417), (403, 52436), (806, 26218), (1612, 13109)]