321389404

素因数分解:

$2^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{17851}}^1$

素因数の和:18505

約数の個数: 24

約数和(自身を含む): 643814528

約数和(自身を除く): 322425124

約数列:

[1, 2, 4, 7, 14, 28, 643, 1286, 2572, 4501, 9002, 17851, 18004, 35702, 71404, 124957, 249914, 499828, 11478193, 22956386, 45912772, 80347351, 160694702, 321389404]

約数ペア:

[(1, 321389404), (2, 160694702), (4, 80347351), (7, 45912772), (14, 22956386), (28, 11478193), (643, 499828), (1286, 249914), (2572, 124957), (4501, 71404), (9002, 35702), (17851, 18004)]