1820414979

素因数分解:

$3^4\times {\mathrm{2381}}^1\times {\mathrm{9439}}^1$

素因数の和:11832

約数の個数: 20

約数和(自身を含む): 2720815680

約数和(自身を除く): 900400701

約数列:

[1, 3, 9, 27, 81, 2381, 7143, 9439, 21429, 28317, 64287, 84951, 192861, 254853, 764559, 22474259, 67422777, 202268331, 606804993, 1820414979]

約数ペア:

[(1, 1820414979), (3, 606804993), (9, 202268331), (27, 67422777), (81, 22474259), (2381, 764559), (7143, 254853), (9439, 192861), (21429, 84951), (28317, 64287)]