2561660

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{367}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 5409600

約数和(自身を除く): 2847940

約数列:

[1, 2, 4, 5, 10, 20, 349, 367, 698, 734, 1396, 1468, 1745, 1835, 3490, 3670, 6980, 7340, 128083, 256166, 512332, 640415, 1280830, 2561660]

約数ペア:

[(1, 2561660), (2, 1280830), (4, 640415), (5, 512332), (10, 256166), (20, 128083), (349, 7340), (367, 6980), (698, 3670), (734, 3490), (1396, 1835), (1468, 1745)]