19794400

素因数分解:

$2^5\times 5^2\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:356

約数の個数: 72

約数和(自身を含む): 48981240

約数和(自身を除く): 29186840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 109, 160, 200, 218, 227, 400, 436, 454, 545, 800, 872, 908, 1090, 1135, 1744, 1816, 2180, 2270, 2725, 3488, 3632, 4360, 4540, 5450, 5675, 7264, 8720, 9080, 10900, 11350, 17440, 18160, 21800, 22700, 24743, 36320, 43600, 45400, 49486, 87200, 90800, 98972, 123715, 181600, 197944, 247430, 395888, 494860, 618575, 791776, 989720, 1237150, 1979440, 2474300, 3958880, 4948600, 9897200, 19794400]

約数ペア:

[(1, 19794400), (2, 9897200), (4, 4948600), (5, 3958880), (8, 2474300), (10, 1979440), (16, 1237150), (20, 989720), (25, 791776), (32, 618575), (40, 494860), (50, 395888), (80, 247430), (100, 197944), (109, 181600), (160, 123715), (200, 98972), (218, 90800), (227, 87200), (400, 49486), (436, 45400), (454, 43600), (545, 36320), (800, 24743), (872, 22700), (908, 21800), (1090, 18160), (1135, 17440), (1744, 11350), (1816, 10900), (2180, 9080), (2270, 8720), (2725, 7264), (3488, 5675), (3632, 5450), (4360, 4540)]