1218903280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{2176613}}^1$

素因数の和:2176633

約数の個数: 40

約数和(自身を含む): 3238801632

約数和(自身を除く): 2019898352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 2176613, 4353226, 8706452, 10883065, 15236291, 17412904, 21766130, 30472582, 34825808, 43532260, 60945164, 76181455, 87064520, 121890328, 152362910, 174129040, 243780656, 304725820, 609451640, 1218903280]

約数ペア:

[(1, 1218903280), (2, 609451640), (4, 304725820), (5, 243780656), (7, 174129040), (8, 152362910), (10, 121890328), (14, 87064520), (16, 76181455), (20, 60945164), (28, 43532260), (35, 34825808), (40, 30472582), (56, 21766130), (70, 17412904), (80, 15236291), (112, 10883065), (140, 8706452), (280, 4353226), (560, 2176613)]