20091999

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{5839}}^1$

素因数の和:5910

約数の個数: 16

約数和(自身を含む): 28405760

約数和(自身を除く): 8313761

約数列:

[1, 3, 31, 37, 93, 111, 1147, 3441, 5839, 17517, 181009, 216043, 543027, 648129, 6697333, 20091999]

約数ペア:

[(1, 20091999), (3, 6697333), (31, 648129), (37, 543027), (93, 216043), (111, 181009), (1147, 17517), (3441, 5839)]