18120004

素因数分解:

$2^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 37900800

約数和(自身を除く): 19780796

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 281, 329, 343, 562, 658, 686, 1124, 1316, 1372, 1967, 2303, 3934, 4606, 7868, 9212, 13207, 13769, 16121, 26414, 27538, 32242, 52828, 55076, 64484, 92449, 96383, 184898, 192766, 369796, 385532, 647143, 1294286, 2588572, 4530001, 9060002, 18120004]

約数ペア:

[(1, 18120004), (2, 9060002), (4, 4530001), (7, 2588572), (14, 1294286), (28, 647143), (47, 385532), (49, 369796), (94, 192766), (98, 184898), (188, 96383), (196, 92449), (281, 64484), (329, 55076), (343, 52828), (562, 32242), (658, 27538), (686, 26414), (1124, 16121), (1316, 13769), (1372, 13207), (1967, 9212), (2303, 7868), (3934, 4606)]