18019701

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1409}}^1$

素因数の和:1458

約数の個数: 36

約数和(自身を含む): 31344300

約数和(自身を除く): 13324599

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1409, 1421, 1827, 4227, 4263, 9863, 12681, 12789, 29589, 40861, 69041, 88767, 122583, 207123, 286027, 367749, 621369, 858081, 2002189, 2574243, 6006567, 18019701]

約数ペア:

[(1, 18019701), (3, 6006567), (7, 2574243), (9, 2002189), (21, 858081), (29, 621369), (49, 367749), (63, 286027), (87, 207123), (147, 122583), (203, 88767), (261, 69041), (441, 40861), (609, 29589), (1409, 12789), (1421, 12681), (1827, 9863), (4227, 4263)]