21123156982

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{61}}^2\times {\mathrm{103}}^1\times {\mathrm{1621}}^1$

素因数の和:1865

約数の個数: 48

約数和(自身を含む): 34459922016

約数和(自身を除く): 13336765034

約数列:

[1, 2, 17, 34, 61, 103, 122, 206, 1037, 1621, 1751, 2074, 3242, 3502, 3721, 6283, 7442, 12566, 27557, 55114, 63257, 98881, 106811, 126514, 166963, 197762, 213622, 333926, 383263, 766526, 1680977, 2838371, 3361954, 5676742, 6031741, 6515471, 10184743, 12063482, 13030942, 20369486, 102539597, 173140631, 205079194, 346281262, 621269323, 1242538646, 10561578491, 21123156982]

約数ペア:

[(1, 21123156982), (2, 10561578491), (17, 1242538646), (34, 621269323), (61, 346281262), (103, 205079194), (122, 173140631), (206, 102539597), (1037, 20369486), (1621, 13030942), (1751, 12063482), (2074, 10184743), (3242, 6515471), (3502, 6031741), (3721, 5676742), (6283, 3361954), (7442, 2838371), (12566, 1680977), (27557, 766526), (55114, 383263), (63257, 333926), (98881, 213622), (106811, 197762), (126514, 166963)]