21120578

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9769}}^1$

素因数の和:9841

約数の個数: 16

約数和(自身を含む): 33765120

約数和(自身を除く): 12644542

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9769, 19538, 224687, 449374, 459143, 918286, 10560289, 21120578]

約数ペア:

[(1, 21120578), (2, 10560289), (23, 918286), (46, 459143), (47, 449374), (94, 224687), (1081, 19538), (2162, 9769)]