128580388

素因数分解:

$2^2\times {\mathrm{127}}^2\times {\mathrm{1993}}^1$

素因数の和:2251

約数の個数: 18

約数和(自身を含む): 226915206

約数和(自身を除く): 98334818

約数列:

[1, 2, 4, 127, 254, 508, 1993, 3986, 7972, 16129, 32258, 64516, 253111, 506222, 1012444, 32145097, 64290194, 128580388]

約数ペア:

[(1, 128580388), (2, 64290194), (4, 32145097), (127, 1012444), (254, 506222), (508, 253111), (1993, 64516), (3986, 32258), (7972, 16129)]