28315989

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 46918144

約数和(自身を除く): 18602155

約数列:

[1, 3, 9, 13, 31, 37, 39, 93, 111, 117, 211, 279, 333, 403, 481, 633, 1147, 1209, 1443, 1899, 2743, 3441, 3627, 4329, 6541, 7807, 8229, 10323, 14911, 19623, 23421, 24687, 44733, 58869, 70263, 85033, 101491, 134199, 242017, 255099, 304473, 726051, 765297, 913419, 2178153, 3146221, 9438663, 28315989]

約数ペア:

[(1, 28315989), (3, 9438663), (9, 3146221), (13, 2178153), (31, 913419), (37, 765297), (39, 726051), (93, 304473), (111, 255099), (117, 242017), (211, 134199), (279, 101491), (333, 85033), (403, 70263), (481, 58869), (633, 44733), (1147, 24687), (1209, 23421), (1443, 19623), (1899, 14911), (2743, 10323), (3441, 8229), (3627, 7807), (4329, 6541)]