20379485

素因数分解:

$5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8650915

約数列:

[1, 5, 7, 35, 59, 71, 139, 295, 355, 413, 497, 695, 973, 2065, 2485, 4189, 4865, 8201, 9869, 20945, 29323, 41005, 49345, 57407, 69083, 146615, 287035, 345415, 582271, 2911355, 4075897, 20379485]

約数ペア:

[(1, 20379485), (5, 4075897), (7, 2911355), (35, 582271), (59, 345415), (71, 287035), (139, 146615), (295, 69083), (355, 57407), (413, 49345), (497, 41005), (695, 29323), (973, 20945), (2065, 9869), (2485, 8201), (4189, 4865)]