66642260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{77491}}^1$

素因数の和:77543

約数の個数: 24

約数和(自身を含む): 143205216

約数和(自身を除く): 76562956

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 77491, 154982, 309964, 387455, 774910, 1549820, 3332113, 6664226, 13328452, 16660565, 33321130, 66642260]

約数ペア:

[(1, 66642260), (2, 33321130), (4, 16660565), (5, 13328452), (10, 6664226), (20, 3332113), (43, 1549820), (86, 774910), (172, 387455), (215, 309964), (430, 154982), (860, 77491)]