266742760

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{155083}}^1$

素因数の和:155137

約数の個数: 32

約数和(自身を含む): 614132640

約数和(自身を除く): 347389880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 155083, 310166, 620332, 775415, 1240664, 1550830, 3101660, 6203320, 6668569, 13337138, 26674276, 33342845, 53348552, 66685690, 133371380, 266742760]

約数ペア:

[(1, 266742760), (2, 133371380), (4, 66685690), (5, 53348552), (8, 33342845), (10, 26674276), (20, 13337138), (40, 6668569), (43, 6203320), (86, 3101660), (172, 1550830), (215, 1240664), (344, 775415), (430, 620332), (860, 310166), (1720, 155083)]