291299920

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{54347}}^1$

素因数の和:54427

約数の個数: 40

約数和(自身を含む): 687393504

約数和(自身を除く): 396093584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 54347, 108694, 217388, 271735, 434776, 543470, 869552, 1086940, 2173880, 3641249, 4347760, 7282498, 14564996, 18206245, 29129992, 36412490, 58259984, 72824980, 145649960, 291299920]

約数ペア:

[(1, 291299920), (2, 145649960), (4, 72824980), (5, 58259984), (8, 36412490), (10, 29129992), (16, 18206245), (20, 14564996), (40, 7282498), (67, 4347760), (80, 3641249), (134, 2173880), (268, 1086940), (335, 869552), (536, 543470), (670, 434776), (1072, 271735), (1340, 217388), (2680, 108694), (5360, 54347)]