18817688

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{557}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 36560160

約数和(自身を除く): 17742472

約数列:

[1, 2, 4, 8, 41, 82, 103, 164, 206, 328, 412, 557, 824, 1114, 2228, 4223, 4456, 8446, 16892, 22837, 33784, 45674, 57371, 91348, 114742, 182696, 229484, 458968, 2352211, 4704422, 9408844, 18817688]

約数ペア:

[(1, 18817688), (2, 9408844), (4, 4704422), (8, 2352211), (41, 458968), (82, 229484), (103, 182696), (164, 114742), (206, 91348), (328, 57371), (412, 45674), (557, 33784), (824, 22837), (1114, 16892), (2228, 8446), (4223, 4456)]