28153251

素因数分解:

$3^8\times 7^1\times {\mathrm{613}}^1$

素因数の和:644

約数の個数: 36

約数和(自身を含む): 48338992

約数和(自身を除く): 20185741

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 613, 729, 1701, 1839, 2187, 4291, 5103, 5517, 6561, 12873, 15309, 16551, 38619, 45927, 49653, 115857, 148959, 347571, 446877, 1042713, 1340631, 3128139, 4021893, 9384417, 28153251]

約数ペア:

[(1, 28153251), (3, 9384417), (7, 4021893), (9, 3128139), (21, 1340631), (27, 1042713), (63, 446877), (81, 347571), (189, 148959), (243, 115857), (567, 49653), (613, 45927), (729, 38619), (1701, 16551), (1839, 15309), (2187, 12873), (4291, 6561), (5103, 5517)]