20958858

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^3\times {\mathrm{79}}^1$

素因数の和:141

約数の個数: 64

約数和(自身を含む): 50112000

約数和(自身を除く): 29153142

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 79, 102, 153, 158, 237, 289, 306, 459, 474, 578, 711, 867, 918, 1343, 1422, 1734, 2133, 2601, 2686, 4029, 4266, 4913, 5202, 7803, 8058, 9826, 12087, 14739, 15606, 22831, 24174, 29478, 36261, 44217, 45662, 68493, 72522, 88434, 132651, 136986, 205479, 265302, 388127, 410958, 616437, 776254, 1164381, 1232874, 2328762, 3493143, 6986286, 10479429, 20958858]

約数ペア:

[(1, 20958858), (2, 10479429), (3, 6986286), (6, 3493143), (9, 2328762), (17, 1232874), (18, 1164381), (27, 776254), (34, 616437), (51, 410958), (54, 388127), (79, 265302), (102, 205479), (153, 136986), (158, 132651), (237, 88434), (289, 72522), (306, 68493), (459, 45662), (474, 44217), (578, 36261), (711, 29478), (867, 24174), (918, 22831), (1343, 15606), (1422, 14739), (1734, 12087), (2133, 9826), (2601, 8058), (2686, 7803), (4029, 5202), (4266, 4913)]