21040713

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1217}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 32491368

約数和(自身を除く): 11450655

約数列:

[1, 3, 9, 17, 51, 113, 153, 339, 1017, 1217, 1921, 3651, 5763, 10953, 17289, 20689, 62067, 137521, 186201, 412563, 1237689, 2337857, 7013571, 21040713]

約数ペア:

[(1, 21040713), (3, 7013571), (9, 2337857), (17, 1237689), (51, 412563), (113, 186201), (153, 137521), (339, 62067), (1017, 20689), (1217, 17289), (1921, 10953), (3651, 5763)]