21347222

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 36825600

約数和(自身を除く): 15478378

約数列:

[1, 2, 13, 19, 26, 38, 79, 158, 247, 494, 547, 1027, 1094, 1501, 2054, 3002, 7111, 10393, 14222, 19513, 20786, 39026, 43213, 86426, 135109, 270218, 561769, 821047, 1123538, 1642094, 10673611, 21347222]

約数ペア:

[(1, 21347222), (2, 10673611), (13, 1642094), (19, 1123538), (26, 821047), (38, 561769), (79, 270218), (158, 135109), (247, 86426), (494, 43213), (547, 39026), (1027, 20786), (1094, 19513), (1501, 14222), (2054, 10393), (3002, 7111)]