2778939

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 4363632

約数和(自身を除く): 1584693

約数列:

[1, 3, 9, 17, 41, 51, 123, 153, 369, 443, 697, 1329, 2091, 3987, 6273, 7531, 18163, 22593, 54489, 67779, 163467, 308771, 926313, 2778939]

約数ペア:

[(1, 2778939), (3, 926313), (9, 308771), (17, 163467), (41, 67779), (51, 54489), (123, 22593), (153, 18163), (369, 7531), (443, 6273), (697, 3987), (1329, 2091)]