1640541620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1155311}}^1$

素因数の和:1155391

約数の個数: 24

約数和(自身を含む): 3493663488

約数和(自身を除く): 1853121868

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1155311, 2310622, 4621244, 5776555, 11553110, 23106220, 82027081, 164054162, 328108324, 410135405, 820270810, 1640541620]

約数ペア:

[(1, 1640541620), (2, 820270810), (4, 410135405), (5, 328108324), (10, 164054162), (20, 82027081), (71, 23106220), (142, 11553110), (284, 5776555), (355, 4621244), (710, 2310622), (1420, 1155311)]