20438771367

素因数分解:

$3^1\times 7^2\times {\mathrm{139039261}}^1$

素因数の和:139039278

約数の個数: 12

約数和(自身を含む): 31700951736

約数和(自身を除く): 11262180369

約数列:

[1, 3, 7, 21, 49, 147, 139039261, 417117783, 973274827, 2919824481, 6812923789, 20438771367]

約数ペア:

[(1, 20438771367), (3, 6812923789), (7, 2919824481), (21, 973274827), (49, 417117783), (147, 139039261)]