19918888

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{491}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 40914720

約数和(自身を除く): 20995832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 461, 491, 922, 982, 1844, 1964, 3688, 3928, 5071, 5401, 10142, 10802, 20284, 21604, 40568, 43208, 226351, 452702, 905404, 1810808, 2489861, 4979722, 9959444, 19918888]

約数ペア:

[(1, 19918888), (2, 9959444), (4, 4979722), (8, 2489861), (11, 1810808), (22, 905404), (44, 452702), (88, 226351), (461, 43208), (491, 40568), (922, 21604), (982, 20284), (1844, 10802), (1964, 10142), (3688, 5401), (3928, 5071)]