81662013

素因数分解:

$3^4\times {\mathrm{313}}^1\times {\mathrm{3221}}^1$

素因数の和:3546

約数の個数: 20

約数和(自身を含む): 122416668

約数和(自身を除く): 40754655

約数列:

[1, 3, 9, 27, 81, 313, 939, 2817, 3221, 8451, 9663, 25353, 28989, 86967, 260901, 1008173, 3024519, 9073557, 27220671, 81662013]

約数ペア:

[(1, 81662013), (3, 27220671), (9, 9073557), (27, 3024519), (81, 1008173), (313, 260901), (939, 86967), (2817, 28989), (3221, 25353), (8451, 9663)]