19129360

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{491}}^1$

素因数の和:991

約数の個数: 40

約数和(自身を含む): 44657856

約数和(自身を除く): 25528496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 491, 974, 982, 1948, 1964, 2435, 2455, 3896, 3928, 4870, 4910, 7792, 7856, 9740, 9820, 19480, 19640, 38960, 39280, 239117, 478234, 956468, 1195585, 1912936, 2391170, 3825872, 4782340, 9564680, 19129360]

約数ペア:

[(1, 19129360), (2, 9564680), (4, 4782340), (5, 3825872), (8, 2391170), (10, 1912936), (16, 1195585), (20, 956468), (40, 478234), (80, 239117), (487, 39280), (491, 38960), (974, 19640), (982, 19480), (1948, 9820), (1964, 9740), (2435, 7856), (2455, 7792), (3896, 4910), (3928, 4870)]