21274851

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28711}}^1$

素因数の和:28746

約数の個数: 16

約数和(自身を含む): 32157440

約数和(自身を除く): 10882589

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28711, 86133, 373243, 545509, 1119729, 1636527, 7091617, 21274851]

約数ペア:

[(1, 21274851), (3, 7091617), (13, 1636527), (19, 1119729), (39, 545509), (57, 373243), (247, 86133), (741, 28711)]