21893285

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1031}}^1$

素因数の和:1204

約数の個数: 16

約数和(自身を含む): 27343872

約数和(自身を除く): 5450587

約数列:

[1, 5, 31, 137, 155, 685, 1031, 4247, 5155, 21235, 31961, 141247, 159805, 706235, 4378657, 21893285]

約数ペア:

[(1, 21893285), (5, 4378657), (31, 706235), (137, 159805), (155, 141247), (685, 31961), (1031, 21235), (4247, 5155)]