19966400

素因数分解:

$2^6\times 5^2\times {\mathrm{12479}}^1$

素因数の和:12501

約数の個数: 42

約数和(自身を含む): 49133760

約数和(自身を除く): 29167360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12479, 24958, 49916, 62395, 99832, 124790, 199664, 249580, 311975, 399328, 499160, 623950, 798656, 998320, 1247900, 1996640, 2495800, 3993280, 4991600, 9983200, 19966400]

約数ペア:

[(1, 19966400), (2, 9983200), (4, 4991600), (5, 3993280), (8, 2495800), (10, 1996640), (16, 1247900), (20, 998320), (25, 798656), (32, 623950), (40, 499160), (50, 399328), (64, 311975), (80, 249580), (100, 199664), (160, 124790), (200, 99832), (320, 62395), (400, 49916), (800, 24958), (1600, 12479)]