18346880

素因数分解:

$2^7\times 5^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 44431200

約数和(自身を除く): 26084320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 263, 320, 436, 526, 545, 640, 872, 1052, 1090, 1315, 1744, 2104, 2180, 2630, 3488, 4208, 4360, 5260, 6976, 8416, 8720, 10520, 13952, 16832, 17440, 21040, 28667, 33664, 34880, 42080, 57334, 69760, 84160, 114668, 143335, 168320, 229336, 286670, 458672, 573340, 917344, 1146680, 1834688, 2293360, 3669376, 4586720, 9173440, 18346880]

約数ペア:

[(1, 18346880), (2, 9173440), (4, 4586720), (5, 3669376), (8, 2293360), (10, 1834688), (16, 1146680), (20, 917344), (32, 573340), (40, 458672), (64, 286670), (80, 229336), (109, 168320), (128, 143335), (160, 114668), (218, 84160), (263, 69760), (320, 57334), (436, 42080), (526, 34880), (545, 33664), (640, 28667), (872, 21040), (1052, 17440), (1090, 16832), (1315, 13952), (1744, 10520), (2104, 8720), (2180, 8416), (2630, 6976), (3488, 5260), (4208, 4360)]