209780800

素因数分解:

$2^6\times 5^2\times {\mathrm{131113}}^1$

素因数の和:131135

約数の個数: 42

約数和(自身を含む): 516195818

約数和(自身を除く): 306415018

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 131113, 262226, 524452, 655565, 1048904, 1311130, 2097808, 2622260, 3277825, 4195616, 5244520, 6555650, 8391232, 10489040, 13111300, 20978080, 26222600, 41956160, 52445200, 104890400, 209780800]

約数ペア:

[(1, 209780800), (2, 104890400), (4, 52445200), (5, 41956160), (8, 26222600), (10, 20978080), (16, 13111300), (20, 10489040), (25, 8391232), (32, 6555650), (40, 5244520), (50, 4195616), (64, 3277825), (80, 2622260), (100, 2097808), (160, 1311130), (200, 1048904), (320, 655565), (400, 524452), (800, 262226), (1600, 131113)]