21308540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96857}}^1$

素因数の和:96877

約数の個数: 24

約数和(自身を含む): 48816432

約数和(自身を除く): 27507892

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96857, 193714, 387428, 484285, 968570, 1065427, 1937140, 2130854, 4261708, 5327135, 10654270, 21308540]

約数ペア:

[(1, 21308540), (2, 10654270), (4, 5327135), (5, 4261708), (10, 2130854), (11, 1937140), (20, 1065427), (22, 968570), (44, 484285), (55, 387428), (110, 193714), (220, 96857)]