21069081

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{487}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 36541440

約数和(自身を除く): 15472359

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 437, 487, 627, 759, 1311, 1461, 1881, 2277, 3933, 4383, 4807, 5357, 9253, 11201, 14421, 16071, 27759, 33603, 43263, 48213, 83277, 100809, 101783, 123211, 212819, 305349, 369633, 638457, 916047, 1108899, 1915371, 2341009, 7023027, 21069081]

約数ペア:

[(1, 21069081), (3, 7023027), (9, 2341009), (11, 1915371), (19, 1108899), (23, 916047), (33, 638457), (57, 369633), (69, 305349), (99, 212819), (171, 123211), (207, 101783), (209, 100809), (253, 83277), (437, 48213), (487, 43263), (627, 33603), (759, 27759), (1311, 16071), (1461, 14421), (1881, 11201), (2277, 9253), (3933, 5357), (4383, 4807)]