21605913

素因数分解:

$3^3\times 7^3\times {\mathrm{2333}}^1$

素因数の和:2363

約数の個数: 32

約数和(自身を含む): 37344000

約数和(自身を除く): 15738087

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 2333, 3087, 6999, 9261, 16331, 20997, 48993, 62991, 114317, 146979, 342951, 440937, 800219, 1028853, 2400657, 3086559, 7201971, 21605913]

約数ペア:

[(1, 21605913), (3, 7201971), (7, 3086559), (9, 2400657), (21, 1028853), (27, 800219), (49, 440937), (63, 342951), (147, 146979), (189, 114317), (343, 62991), (441, 48993), (1029, 20997), (1323, 16331), (2333, 9261), (3087, 6999)]