28777749

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 53893728

約数和(自身を除く): 25115979

約数列:

[1, 3, 7, 11, 13, 21, 33, 37, 39, 49, 77, 91, 111, 143, 147, 231, 259, 273, 407, 429, 481, 539, 637, 777, 1001, 1221, 1369, 1443, 1617, 1813, 1911, 2849, 3003, 3367, 4107, 5291, 5439, 7007, 8547, 9583, 10101, 15059, 15873, 17797, 19943, 21021, 23569, 28749, 37037, 45177, 53391, 59829, 67081, 70707, 105413, 111111, 124579, 195767, 201243, 259259, 316239, 373737, 587301, 737891, 777777, 872053, 1370369, 2213673, 2616159, 4111107, 9592583, 28777749]

約数ペア:

[(1, 28777749), (3, 9592583), (7, 4111107), (11, 2616159), (13, 2213673), (21, 1370369), (33, 872053), (37, 777777), (39, 737891), (49, 587301), (77, 373737), (91, 316239), (111, 259259), (143, 201243), (147, 195767), (231, 124579), (259, 111111), (273, 105413), (407, 70707), (429, 67081), (481, 59829), (539, 53391), (637, 45177), (777, 37037), (1001, 28749), (1221, 23569), (1369, 21021), (1443, 19943), (1617, 17797), (1813, 15873), (1911, 15059), (2849, 10101), (3003, 9583), (3367, 8547), (4107, 7007), (5291, 5439)]