215865321

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{271}}^1\times {\mathrm{457}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 334860288

約数和(自身を除く): 118994967

約数列:

[1, 3, 7, 21, 83, 249, 271, 457, 581, 813, 1371, 1743, 1897, 3199, 5691, 9597, 22493, 37931, 67479, 113793, 123847, 157451, 265517, 371541, 472353, 796551, 866929, 2600787, 10279301, 30837903, 71955107, 215865321]

約数ペア:

[(1, 215865321), (3, 71955107), (7, 30837903), (21, 10279301), (83, 2600787), (249, 866929), (271, 796551), (457, 472353), (581, 371541), (813, 265517), (1371, 157451), (1743, 123847), (1897, 113793), (3199, 67479), (5691, 37931), (9597, 22493)]