21401487

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{3253}}^1$

素因数の和:3319

約数の個数: 24

約数和(自身を含む): 33503184

約数和(自身を除く): 12101697

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 3253, 6579, 9759, 29277, 55301, 139879, 165903, 419637, 497709, 1258911, 2377943, 7133829, 21401487]

約数ペア:

[(1, 21401487), (3, 7133829), (9, 2377943), (17, 1258911), (43, 497709), (51, 419637), (129, 165903), (153, 139879), (387, 55301), (731, 29277), (2193, 9759), (3253, 6579)]