21179540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28621}}^1$

素因数の和:28667

約数の個数: 24

約数和(自身を含む): 45680712

約数和(自身を除く): 24501172

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28621, 57242, 114484, 143105, 286210, 572420, 1058977, 2117954, 4235908, 5294885, 10589770, 21179540]

約数ペア:

[(1, 21179540), (2, 10589770), (4, 5294885), (5, 4235908), (10, 2117954), (20, 1058977), (37, 572420), (74, 286210), (148, 143105), (185, 114484), (370, 57242), (740, 28621)]