21682690

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30539}}^1$

素因数の和:30617

約数の個数: 16

約数和(自身を含む): 39579840

約数和(自身を除く): 17897150

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 30539, 61078, 152695, 305390, 2168269, 4336538, 10841345, 21682690]

約数ペア:

[(1, 21682690), (2, 10841345), (5, 4336538), (10, 2168269), (71, 305390), (142, 152695), (355, 61078), (710, 30539)]