20890400

素因数分解:

$2^5\times 5^2\times {\mathrm{26113}}^1$

素因数の和:26133

約数の個数: 36

約数和(自身を含む): 51000642

約数和(自身を除く): 30110242

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26113, 52226, 104452, 130565, 208904, 261130, 417808, 522260, 652825, 835616, 1044520, 1305650, 2089040, 2611300, 4178080, 5222600, 10445200, 20890400]

約数ペア:

[(1, 20890400), (2, 10445200), (4, 5222600), (5, 4178080), (8, 2611300), (10, 2089040), (16, 1305650), (20, 1044520), (25, 835616), (32, 652825), (40, 522260), (50, 417808), (80, 261130), (100, 208904), (160, 130565), (200, 104452), (400, 52226), (800, 26113)]