20171228

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{829}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 44620800

約数和(自身を除く): 24449572

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 79, 154, 158, 308, 316, 553, 829, 869, 1106, 1658, 1738, 2212, 3316, 3476, 5803, 6083, 9119, 11606, 12166, 18238, 23212, 24332, 36476, 63833, 65491, 127666, 130982, 255332, 261964, 458437, 720401, 916874, 1440802, 1833748, 2881604, 5042807, 10085614, 20171228]

約数ペア:

[(1, 20171228), (2, 10085614), (4, 5042807), (7, 2881604), (11, 1833748), (14, 1440802), (22, 916874), (28, 720401), (44, 458437), (77, 261964), (79, 255332), (154, 130982), (158, 127666), (308, 65491), (316, 63833), (553, 36476), (829, 24332), (869, 23212), (1106, 18238), (1658, 12166), (1738, 11606), (2212, 9119), (3316, 6083), (3476, 5803)]