28688680

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1619}}^1$

素因数の和:2073

約数の個数: 32

約数和(自身を含む): 64735200

約数和(自身を除く): 36046520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1619, 1772, 2215, 3238, 3544, 4430, 6476, 8095, 8860, 12952, 16190, 17720, 32380, 64760, 717217, 1434434, 2868868, 3586085, 5737736, 7172170, 14344340, 28688680]

約数ペア:

[(1, 28688680), (2, 14344340), (4, 7172170), (5, 5737736), (8, 3586085), (10, 2868868), (20, 1434434), (40, 717217), (443, 64760), (886, 32380), (1619, 17720), (1772, 16190), (2215, 12952), (3238, 8860), (3544, 8095), (4430, 6476)]