20213218143

素因数分解:

$3^4\times {\mathrm{509}}^1\times {\mathrm{490267}}^1$

素因数の和:490788

約数の個数: 20

約数和(自身を含む): 30254438280

約数和(自身を除く): 10041220137

約数列:

[1, 3, 9, 27, 81, 509, 1527, 4581, 13743, 41229, 490267, 1470801, 4412403, 13237209, 39711627, 249545903, 748637709, 2245913127, 6737739381, 20213218143]

約数ペア:

[(1, 20213218143), (3, 6737739381), (9, 2245913127), (27, 748637709), (81, 249545903), (509, 39711627), (1527, 13237209), (4581, 4412403), (13743, 1470801), (41229, 490267)]