261088479

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 427889280

約数和(自身を除く): 166800801

約数列:

[1, 3, 9, 23, 29, 31, 61, 69, 87, 93, 183, 207, 261, 279, 529, 549, 667, 713, 899, 1403, 1587, 1769, 1891, 2001, 2139, 2697, 4209, 4761, 5307, 5673, 6003, 6417, 8091, 12627, 15341, 15921, 16399, 17019, 20677, 32269, 40687, 43493, 46023, 49197, 54839, 62031, 96807, 122061, 130479, 138069, 147591, 164517, 186093, 290421, 366183, 391437, 475571, 493551, 935801, 1000339, 1261297, 1426713, 2807403, 3001017, 3783891, 4280139, 8422209, 9003051, 11351673, 29009831, 87029493, 261088479]

約数ペア:

[(1, 261088479), (3, 87029493), (9, 29009831), (23, 11351673), (29, 9003051), (31, 8422209), (61, 4280139), (69, 3783891), (87, 3001017), (93, 2807403), (183, 1426713), (207, 1261297), (261, 1000339), (279, 935801), (529, 493551), (549, 475571), (667, 391437), (713, 366183), (899, 290421), (1403, 186093), (1587, 164517), (1769, 147591), (1891, 138069), (2001, 130479), (2139, 122061), (2697, 96807), (4209, 62031), (4761, 54839), (5307, 49197), (5673, 46023), (6003, 43493), (6417, 40687), (8091, 32269), (12627, 20677), (15341, 17019), (15921, 16399)]