25515520

素因数分解:

$2^9\times 5^1\times {\mathrm{9967}}^1$

素因数の和:9990

約数の個数: 40

約数和(自身を含む): 61183584

約数和(自身を除く): 35668064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 9967, 19934, 39868, 49835, 79736, 99670, 159472, 199340, 318944, 398680, 637888, 797360, 1275776, 1594720, 2551552, 3189440, 5103104, 6378880, 12757760, 25515520]

約数ペア:

[(1, 25515520), (2, 12757760), (4, 6378880), (5, 5103104), (8, 3189440), (10, 2551552), (16, 1594720), (20, 1275776), (32, 797360), (40, 637888), (64, 398680), (80, 318944), (128, 199340), (160, 159472), (256, 99670), (320, 79736), (512, 49835), (640, 39868), (1280, 19934), (2560, 9967)]