8890400

素因数分解:

$2^5\times 5^2\times {\mathrm{11113}}^1$

素因数の和:11133

約数の個数: 36

約数和(自身を含む): 21705642

約数和(自身を除く): 12815242

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 11113, 22226, 44452, 55565, 88904, 111130, 177808, 222260, 277825, 355616, 444520, 555650, 889040, 1111300, 1778080, 2222600, 4445200, 8890400]

約数ペア:

[(1, 8890400), (2, 4445200), (4, 2222600), (5, 1778080), (8, 1111300), (10, 889040), (16, 555650), (20, 444520), (25, 355616), (32, 277825), (40, 222260), (50, 177808), (80, 111130), (100, 88904), (160, 55565), (200, 44452), (400, 22226), (800, 11113)]