56721441

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{142159}}^1$

素因数の和:142188

約数の個数: 16

約数和(自身を含む): 90982400

約数和(自身を除く): 34260959

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 142159, 426477, 995113, 2701021, 2985339, 8103063, 18907147, 56721441]

約数ペア:

[(1, 56721441), (3, 18907147), (7, 8103063), (19, 2985339), (21, 2701021), (57, 995113), (133, 426477), (399, 142159)]