28860111

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4127}}^1$

素因数の和:4180

約数の個数: 32

約数和(自身を含む): 50196480

約数和(自身を除く): 21336369

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 4127, 6993, 12381, 28889, 37143, 86667, 111429, 152699, 260001, 458097, 780003, 1068893, 1374291, 3206679, 4122873, 9620037, 28860111]

約数ペア:

[(1, 28860111), (3, 9620037), (7, 4122873), (9, 3206679), (21, 1374291), (27, 1068893), (37, 780003), (63, 458097), (111, 260001), (189, 152699), (259, 111429), (333, 86667), (777, 37143), (999, 28889), (2331, 12381), (4127, 6993)]