80220680

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3119}}^1$

素因数の和:3773

約数の個数: 32

約数和(自身を含む): 180835200

約数和(自身を除く): 100614520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3119, 3215, 5144, 6238, 6430, 12476, 12860, 15595, 24952, 25720, 31190, 62380, 124760, 2005517, 4011034, 8022068, 10027585, 16044136, 20055170, 40110340, 80220680]

約数ペア:

[(1, 80220680), (2, 40110340), (4, 20055170), (5, 16044136), (8, 10027585), (10, 8022068), (20, 4011034), (40, 2005517), (643, 124760), (1286, 62380), (2572, 31190), (3119, 25720), (3215, 24952), (5144, 15595), (6238, 12860), (6430, 12476)]