64391984

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{541}}^1$

素因数の和:765

約数の個数: 40

約数和(自身を含む): 128636112

約数和(自身を除く): 64244128

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 173, 344, 346, 541, 688, 692, 1082, 1384, 2164, 2768, 4328, 7439, 8656, 14878, 23263, 29756, 46526, 59512, 93052, 93593, 119024, 186104, 187186, 372208, 374372, 748744, 1497488, 4024499, 8048998, 16097996, 32195992, 64391984]

約数ペア:

[(1, 64391984), (2, 32195992), (4, 16097996), (8, 8048998), (16, 4024499), (43, 1497488), (86, 748744), (172, 374372), (173, 372208), (344, 187186), (346, 186104), (541, 119024), (688, 93593), (692, 93052), (1082, 59512), (1384, 46526), (2164, 29756), (2768, 23263), (4328, 14878), (7439, 8656)]