61781391

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{3907}}^1$

素因数の和:4171

約数の個数: 24

約数和(自身を含む): 102420864

約数和(自身を除く): 40639473

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1757, 2259, 3907, 5271, 11721, 15813, 27349, 35163, 82047, 246141, 980657, 2941971, 6864599, 8825913, 20593797, 61781391]

約数ペア:

[(1, 61781391), (3, 20593797), (7, 8825913), (9, 6864599), (21, 2941971), (63, 980657), (251, 246141), (753, 82047), (1757, 35163), (2259, 27349), (3907, 15813), (5271, 11721)]