221341520

素因数分解:

$2^4\times 5^1\times {\mathrm{2766769}}^1$

素因数の和:2766782

約数の個数: 20

約数和(自身を含む): 514619220

約数和(自身を除く): 293277700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2766769, 5533538, 11067076, 13833845, 22134152, 27667690, 44268304, 55335380, 110670760, 221341520]

約数ペア:

[(1, 221341520), (2, 110670760), (4, 55335380), (5, 44268304), (8, 27667690), (10, 22134152), (16, 13833845), (20, 11067076), (40, 5533538), (80, 2766769)]