278317893

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 444709440

約数和(自身を除く): 166391547

約数列:

[1, 3, 7, 21, 49, 53, 139, 147, 159, 257, 371, 417, 771, 973, 1113, 1799, 2597, 2919, 5397, 6811, 7367, 7791, 12593, 13621, 20433, 22101, 35723, 37779, 40863, 51569, 95347, 107169, 154707, 250061, 286041, 360983, 667429, 750183, 1082949, 1750427, 1893319, 2002287, 5251281, 5679957, 13253233, 39759699, 92772631, 278317893]

約数ペア:

[(1, 278317893), (3, 92772631), (7, 39759699), (21, 13253233), (49, 5679957), (53, 5251281), (139, 2002287), (147, 1893319), (159, 1750427), (257, 1082949), (371, 750183), (417, 667429), (771, 360983), (973, 286041), (1113, 250061), (1799, 154707), (2597, 107169), (2919, 95347), (5397, 51569), (6811, 40863), (7367, 37779), (7791, 35723), (12593, 22101), (13621, 20433)]