28512561

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^2\times {\mathrm{229}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 48944000

約数和(自身を除く): 20431439

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 121, 147, 229, 231, 343, 363, 539, 687, 847, 1029, 1603, 1617, 2519, 2541, 3773, 4809, 5929, 7557, 11221, 11319, 17633, 17787, 27709, 33663, 41503, 52899, 78547, 83127, 123431, 124509, 193963, 235641, 370293, 581889, 864017, 1357741, 2592051, 4073223, 9504187, 28512561]

約数ペア:

[(1, 28512561), (3, 9504187), (7, 4073223), (11, 2592051), (21, 1357741), (33, 864017), (49, 581889), (77, 370293), (121, 235641), (147, 193963), (229, 124509), (231, 123431), (343, 83127), (363, 78547), (539, 52899), (687, 41503), (847, 33663), (1029, 27709), (1603, 17787), (1617, 17633), (2519, 11319), (2541, 11221), (3773, 7557), (4809, 5929)]