21131578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47809}}^1$

素因数の和:47841

約数の個数: 16

約数和(自身を含む): 36144360

約数和(自身を除く): 15012782

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 47809, 95618, 621517, 812753, 1243034, 1625506, 10565789, 21131578]

約数ペア:

[(1, 21131578), (2, 10565789), (13, 1625506), (17, 1243034), (26, 812753), (34, 621517), (221, 95618), (442, 47809)]