81187731

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{449}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 124488000

約数和(自身を除く): 43300269

約数列:

[1, 3, 9, 27, 37, 111, 181, 333, 449, 543, 999, 1347, 1629, 4041, 4887, 6697, 12123, 16613, 20091, 49839, 60273, 81269, 149517, 180819, 243807, 448551, 731421, 2194263, 3006953, 9020859, 27062577, 81187731]

約数ペア:

[(1, 81187731), (3, 27062577), (9, 9020859), (27, 3006953), (37, 2194263), (111, 731421), (181, 448551), (333, 243807), (449, 180819), (543, 149517), (999, 81269), (1347, 60273), (1629, 49839), (4041, 20091), (4887, 16613), (6697, 12123)]