278540171

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2269}}^1$

素因数の和:2379

約数の個数: 32

約数和(自身を含む): 366105600

約数和(自身を除く): 87565429

約数列:

[1, 7, 13, 19, 71, 91, 133, 247, 497, 923, 1349, 1729, 2269, 6461, 9443, 15883, 17537, 29497, 43111, 122759, 161099, 206479, 301777, 560443, 1127693, 2094287, 3060881, 3923101, 14660009, 21426167, 39791453, 278540171]

約数ペア:

[(1, 278540171), (7, 39791453), (13, 21426167), (19, 14660009), (71, 3923101), (91, 3060881), (133, 2094287), (247, 1127693), (497, 560443), (923, 301777), (1349, 206479), (1729, 161099), (2269, 122759), (6461, 43111), (9443, 29497), (15883, 17537)]