320199340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{390487}}^1$

素因数の和:390537

約数の個数: 24

約数和(自身を含む): 688820832

約数和(自身を除く): 368621492

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 390487, 780974, 1561948, 1952435, 3904870, 7809740, 16009967, 32019934, 64039868, 80049835, 160099670, 320199340]

約数ペア:

[(1, 320199340), (2, 160099670), (4, 80049835), (5, 64039868), (10, 32019934), (20, 16009967), (41, 7809740), (82, 3904870), (164, 1952435), (205, 1561948), (410, 780974), (820, 390487)]