20821158

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 50397120

約数和(自身を除く): 29575962

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 37, 51, 54, 74, 102, 111, 153, 222, 306, 333, 459, 613, 629, 666, 918, 999, 1226, 1258, 1839, 1887, 1998, 3678, 3774, 5517, 5661, 10421, 11034, 11322, 16551, 16983, 20842, 22681, 31263, 33102, 33966, 45362, 62526, 68043, 93789, 136086, 187578, 204129, 281367, 385577, 408258, 562734, 612387, 771154, 1156731, 1224774, 2313462, 3470193, 6940386, 10410579, 20821158]

約数ペア:

[(1, 20821158), (2, 10410579), (3, 6940386), (6, 3470193), (9, 2313462), (17, 1224774), (18, 1156731), (27, 771154), (34, 612387), (37, 562734), (51, 408258), (54, 385577), (74, 281367), (102, 204129), (111, 187578), (153, 136086), (222, 93789), (306, 68043), (333, 62526), (459, 45362), (613, 33966), (629, 33102), (666, 31263), (918, 22681), (999, 20842), (1226, 16983), (1258, 16551), (1839, 11322), (1887, 11034), (1998, 10421), (3678, 5661), (3774, 5517)]