81617450

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{18341}}^1$

素因数の和:18442

約数の個数: 24

約数和(自身を含む): 153522540

約数和(自身を除く): 71905090

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 18341, 36682, 91705, 183410, 458525, 917050, 1632349, 3264698, 8161745, 16323490, 40808725, 81617450]

約数ペア:

[(1, 81617450), (2, 40808725), (5, 16323490), (10, 8161745), (25, 3264698), (50, 1632349), (89, 917050), (178, 458525), (445, 183410), (890, 91705), (2225, 36682), (4450, 18341)]