393315280

素因数分解:

$2^4\times 5^1\times {\mathrm{4916441}}^1$

素因数の和:4916454

約数の個数: 20

約数和(自身を含む): 914458212

約数和(自身を除く): 521142932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4916441, 9832882, 19665764, 24582205, 39331528, 49164410, 78663056, 98328820, 196657640, 393315280]

約数ペア:

[(1, 393315280), (2, 196657640), (4, 98328820), (5, 78663056), (8, 49164410), (10, 39331528), (16, 24582205), (20, 19665764), (40, 9832882), (80, 4916441)]