77871280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22637}}^1$

素因数の和:22693

約数の個数: 40

約数和(自身を含む): 185269392

約数和(自身を除く): 107398112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22637, 45274, 90548, 113185, 181096, 226370, 362192, 452740, 905480, 973391, 1810960, 1946782, 3893564, 4866955, 7787128, 9733910, 15574256, 19467820, 38935640, 77871280]

約数ペア:

[(1, 77871280), (2, 38935640), (4, 19467820), (5, 15574256), (8, 9733910), (10, 7787128), (16, 4866955), (20, 3893564), (40, 1946782), (43, 1810960), (80, 973391), (86, 905480), (172, 452740), (215, 362192), (344, 226370), (430, 181096), (688, 113185), (860, 90548), (1720, 45274), (3440, 22637)]