81128560

素因数分解:

$2^4\times 5^1\times {\mathrm{599}}^1\times {\mathrm{1693}}^1$

素因数の和:2305

約数の個数: 40

約数和(自身を含む): 189050400

約数和(自身を除く): 107921840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 599, 1198, 1693, 2396, 2995, 3386, 4792, 5990, 6772, 8465, 9584, 11980, 13544, 16930, 23960, 27088, 33860, 47920, 67720, 135440, 1014107, 2028214, 4056428, 5070535, 8112856, 10141070, 16225712, 20282140, 40564280, 81128560]

約数ペア:

[(1, 81128560), (2, 40564280), (4, 20282140), (5, 16225712), (8, 10141070), (10, 8112856), (16, 5070535), (20, 4056428), (40, 2028214), (80, 1014107), (599, 135440), (1198, 67720), (1693, 47920), (2396, 33860), (2995, 27088), (3386, 23960), (4792, 16930), (5990, 13544), (6772, 11980), (8465, 9584)]