20491400

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3533}}^1$

素因数の和:3578

約数の個数: 48

約数和(自身を含む): 49299300

約数和(自身を除く): 28807900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3533, 5800, 7066, 14132, 17665, 28264, 35330, 70660, 88325, 102457, 141320, 176650, 204914, 353300, 409828, 512285, 706600, 819656, 1024570, 2049140, 2561425, 4098280, 5122850, 10245700, 20491400]

約数ペア:

[(1, 20491400), (2, 10245700), (4, 5122850), (5, 4098280), (8, 2561425), (10, 2049140), (20, 1024570), (25, 819656), (29, 706600), (40, 512285), (50, 409828), (58, 353300), (100, 204914), (116, 176650), (145, 141320), (200, 102457), (232, 88325), (290, 70660), (580, 35330), (725, 28264), (1160, 17665), (1450, 14132), (2900, 7066), (3533, 5800)]