81294340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{1321}}^1$

素因数の和:1528

約数の個数: 48

約数和(自身を含む): 181896624

約数和(自身を除く): 100602284

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 181, 340, 362, 724, 905, 1321, 1810, 2642, 3077, 3620, 5284, 6154, 6605, 12308, 13210, 15385, 22457, 26420, 30770, 44914, 61540, 89828, 112285, 224570, 239101, 449140, 478202, 956404, 1195505, 2391010, 4064717, 4782020, 8129434, 16258868, 20323585, 40647170, 81294340]

約数ペア:

[(1, 81294340), (2, 40647170), (4, 20323585), (5, 16258868), (10, 8129434), (17, 4782020), (20, 4064717), (34, 2391010), (68, 1195505), (85, 956404), (170, 478202), (181, 449140), (340, 239101), (362, 224570), (724, 112285), (905, 89828), (1321, 61540), (1810, 44914), (2642, 30770), (3077, 26420), (3620, 22457), (5284, 15385), (6154, 13210), (6605, 12308)]