21353409

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10271}}^1$

素因数の和:10298

約数の個数: 32

約数和(自身を含む): 39444480

約数和(自身を除く): 18091071

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 10271, 30813, 71897, 92439, 112981, 215691, 277317, 338943, 647073, 790867, 1016829, 1941219, 2372601, 3050487, 7117803, 21353409]

約数ペア:

[(1, 21353409), (3, 7117803), (7, 3050487), (9, 2372601), (11, 1941219), (21, 1016829), (27, 790867), (33, 647073), (63, 338943), (77, 277317), (99, 215691), (189, 112981), (231, 92439), (297, 71897), (693, 30813), (2079, 10271)]