21841730

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30763}}^1$

素因数の和:30841

約数の個数: 16

約数和(自身を含む): 39870144

約数和(自身を除く): 18028414

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 30763, 61526, 153815, 307630, 2184173, 4368346, 10920865, 21841730]

約数ペア:

[(1, 21841730), (2, 10920865), (5, 4368346), (10, 2184173), (71, 307630), (142, 153815), (355, 61526), (710, 30763)]