81561986

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{9109}}^1$

素因数の和:9170

約数の個数: 24

約数和(自身を含む): 138125820

約数和(自身を除く): 56563834

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 4477, 8954, 9109, 18218, 100199, 200398, 337033, 674066, 1102189, 2204378, 3707363, 7414726, 40780993, 81561986]

約数ペア:

[(1, 81561986), (2, 40780993), (11, 7414726), (22, 3707363), (37, 2204378), (74, 1102189), (121, 674066), (242, 337033), (407, 200398), (814, 100199), (4477, 18218), (8954, 9109)]