3880400

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 60

約数和(自身を含む): 9513900

約数和(自身を除く): 5633500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 109, 178, 200, 218, 356, 400, 436, 445, 545, 712, 872, 890, 1090, 1424, 1744, 1780, 2180, 2225, 2725, 3560, 4360, 4450, 5450, 7120, 8720, 8900, 9701, 10900, 17800, 19402, 21800, 35600, 38804, 43600, 48505, 77608, 97010, 155216, 194020, 242525, 388040, 485050, 776080, 970100, 1940200, 3880400]

約数ペア:

[(1, 3880400), (2, 1940200), (4, 970100), (5, 776080), (8, 485050), (10, 388040), (16, 242525), (20, 194020), (25, 155216), (40, 97010), (50, 77608), (80, 48505), (89, 43600), (100, 38804), (109, 35600), (178, 21800), (200, 19402), (218, 17800), (356, 10900), (400, 9701), (436, 8900), (445, 8720), (545, 7120), (712, 5450), (872, 4450), (890, 4360), (1090, 3560), (1424, 2725), (1744, 2225), (1780, 2180)]