639731640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{123979}}^1$

素因数の和:124036

約数の個数: 64

約数和(自身を含む): 1963843200

約数和(自身を除く): 1324111560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 123979, 247958, 371937, 495916, 619895, 743874, 991832, 1239790, 1487748, 1859685, 2479580, 2975496, 3719370, 4959160, 5331097, 7438740, 10662194, 14877480, 15993291, 21324388, 26655485, 31986582, 42648776, 53310970, 63973164, 79966455, 106621940, 127946328, 159932910, 213243880, 319865820, 639731640]

約数ペア:

[(1, 639731640), (2, 319865820), (3, 213243880), (4, 159932910), (5, 127946328), (6, 106621940), (8, 79966455), (10, 63973164), (12, 53310970), (15, 42648776), (20, 31986582), (24, 26655485), (30, 21324388), (40, 15993291), (43, 14877480), (60, 10662194), (86, 7438740), (120, 5331097), (129, 4959160), (172, 3719370), (215, 2975496), (258, 2479580), (344, 1859685), (430, 1487748), (516, 1239790), (645, 991832), (860, 743874), (1032, 619895), (1290, 495916), (1720, 371937), (2580, 247958), (5160, 123979)]