20670155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{101}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 27782352

約数和(自身を除く): 7112197

約数列:

[1, 5, 11, 55, 61, 101, 305, 505, 671, 1111, 3355, 3721, 5555, 6161, 18605, 30805, 40931, 67771, 204655, 338855, 375821, 1879105, 4134031, 20670155]

約数ペア:

[(1, 20670155), (5, 4134031), (11, 1879105), (55, 375821), (61, 338855), (101, 204655), (305, 67771), (505, 40931), (671, 30805), (1111, 18605), (3355, 6161), (3721, 5555)]