21436389

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9643}}^1$

素因数の和:9681

約数の個数: 24

約数和(自身を含む): 35104160

約数和(自身を除く): 13667771

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9643, 28929, 86787, 125359, 183217, 376077, 549651, 1128231, 1648953, 2381821, 7145463, 21436389]

約数ペア:

[(1, 21436389), (3, 7145463), (9, 2381821), (13, 1648953), (19, 1128231), (39, 549651), (57, 376077), (117, 183217), (171, 125359), (247, 86787), (741, 28929), (2223, 9643)]