21497600

素因数分解:

$2^8\times 5^2\times {\mathrm{3359}}^1$

素因数の和:3385

約数の個数: 54

約数和(自身を含む): 53225760

約数和(自身を除く): 31728160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3359, 6400, 6718, 13436, 16795, 26872, 33590, 53744, 67180, 83975, 107488, 134360, 167950, 214976, 268720, 335900, 429952, 537440, 671800, 859904, 1074880, 1343600, 2149760, 2687200, 4299520, 5374400, 10748800, 21497600]

約数ペア:

[(1, 21497600), (2, 10748800), (4, 5374400), (5, 4299520), (8, 2687200), (10, 2149760), (16, 1343600), (20, 1074880), (25, 859904), (32, 671800), (40, 537440), (50, 429952), (64, 335900), (80, 268720), (100, 214976), (128, 167950), (160, 134360), (200, 107488), (256, 83975), (320, 67180), (400, 53744), (640, 33590), (800, 26872), (1280, 16795), (1600, 13436), (3200, 6718), (3359, 6400)]