21502019

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4733}}^1$

素因数の和:4810

約数の個数: 16

約数和(自身を含む): 27267840

約数和(自身を除く): 5765821

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4733, 33131, 52063, 279247, 364441, 1954729, 3071717, 21502019]

約数ペア:

[(1, 21502019), (7, 3071717), (11, 1954729), (59, 364441), (77, 279247), (413, 52063), (649, 33131), (4543, 4733)]