128420988

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{76991}}^1$

素因数の和:77137

約数の個数: 24

約数和(自身を含む): 301808640

約数和(自身を除く): 173387652

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 76991, 153982, 230973, 307964, 461946, 923892, 10701749, 21403498, 32105247, 42806996, 64210494, 128420988]

約数ペア:

[(1, 128420988), (2, 64210494), (3, 42806996), (4, 32105247), (6, 21403498), (12, 10701749), (139, 923892), (278, 461946), (417, 307964), (556, 230973), (834, 153982), (1668, 76991)]