21031858143

素因数分解:

$3^3\times {\mathrm{109}}^1\times {\mathrm{7146401}}^1$

素因数の和:7146519

約数の個数: 16

約数和(自身を含む): 31444168800

約数和(自身を除く): 10412310657

約数列:

[1, 3, 9, 27, 109, 327, 981, 2943, 7146401, 21439203, 64317609, 192952827, 778957709, 2336873127, 7010619381, 21031858143]

約数ペア:

[(1, 21031858143), (3, 7010619381), (9, 2336873127), (27, 778957709), (109, 192952827), (327, 64317609), (981, 21439203), (2943, 7146401)]