21403390

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{57847}}^1$

素因数の和:57891

約数の個数: 16

約数和(自身を含む): 39568032

約数和(自身を除く): 18164642

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 57847, 115694, 289235, 578470, 2140339, 4280678, 10701695, 21403390]

約数ペア:

[(1, 21403390), (2, 10701695), (5, 4280678), (10, 2140339), (37, 578470), (74, 289235), (185, 115694), (370, 57847)]