20278797

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12541}}^1$

素因数の和:12569

約数の個数: 24

約数和(自身を含む): 34314912

約数和(自身を除く): 14036115

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12541, 37623, 87787, 137951, 263361, 413853, 614509, 965657, 1843527, 2896971, 6759599, 20278797]

約数ペア:

[(1, 20278797), (3, 6759599), (7, 2896971), (11, 1843527), (21, 965657), (33, 614509), (49, 413853), (77, 263361), (147, 137951), (231, 87787), (539, 37623), (1617, 12541)]