21302545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{2467}}^1$

素因数の和:2640

約数の個数: 16

約数和(自身を含む): 28075968

約数和(自身を除く): 6773423

約数列:

[1, 5, 11, 55, 157, 785, 1727, 2467, 8635, 12335, 27137, 135685, 387319, 1936595, 4260509, 21302545]

約数ペア:

[(1, 21302545), (5, 4260509), (11, 1936595), (55, 387319), (157, 135685), (785, 27137), (1727, 12335), (2467, 8635)]