2781009

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4013}}^1$

素因数の和:4037

約数の個数: 24

約数和(自身を含む): 5009472

約数和(自身を除く): 2228463

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 4013, 12039, 28091, 36117, 44143, 84273, 132429, 252819, 309001, 397287, 927003, 2781009]

約数ペア:

[(1, 2781009), (3, 927003), (7, 397287), (9, 309001), (11, 252819), (21, 132429), (33, 84273), (63, 44143), (77, 36117), (99, 28091), (231, 12039), (693, 4013)]