77878160

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22639}}^1$

素因数の和:22695

約数の個数: 40

約数和(自身を含む): 185285760

約数和(自身を除く): 107407600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22639, 45278, 90556, 113195, 181112, 226390, 362224, 452780, 905560, 973477, 1811120, 1946954, 3893908, 4867385, 7787816, 9734770, 15575632, 19469540, 38939080, 77878160]

約数ペア:

[(1, 77878160), (2, 38939080), (4, 19469540), (5, 15575632), (8, 9734770), (10, 7787816), (16, 4867385), (20, 3893908), (40, 1946954), (43, 1811120), (80, 973477), (86, 905560), (172, 452780), (215, 362224), (344, 226390), (430, 181112), (688, 113195), (860, 90556), (1720, 45278), (3440, 22639)]