205156720

素因数分解:

$2^4\times 5^1\times {\mathrm{2564459}}^1$

素因数の和:2564472

約数の個数: 20

約数和(自身を含む): 476989560

約数和(自身を除く): 271832840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2564459, 5128918, 10257836, 12822295, 20515672, 25644590, 41031344, 51289180, 102578360, 205156720]

約数ペア:

[(1, 205156720), (2, 102578360), (4, 51289180), (5, 41031344), (8, 25644590), (10, 20515672), (16, 12822295), (20, 10257836), (40, 5128918), (80, 2564459)]