18859040

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{379}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 25956640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 379, 622, 758, 1244, 1516, 1555, 1895, 2488, 3032, 3110, 3790, 4976, 6064, 6220, 7580, 9952, 12128, 12440, 15160, 24880, 30320, 49760, 60640, 117869, 235738, 471476, 589345, 942952, 1178690, 1885904, 2357380, 3771808, 4714760, 9429520, 18859040]

約数ペア:

[(1, 18859040), (2, 9429520), (4, 4714760), (5, 3771808), (8, 2357380), (10, 1885904), (16, 1178690), (20, 942952), (32, 589345), (40, 471476), (80, 235738), (160, 117869), (311, 60640), (379, 49760), (622, 30320), (758, 24880), (1244, 15160), (1516, 12440), (1555, 12128), (1895, 9952), (2488, 7580), (3032, 6220), (3110, 6064), (3790, 4976)]