20802663

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1931}}^1$

素因数の和:1969

約数の個数: 40

約数和(自身を含む): 37403520

約数和(自身を除く): 16600857

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1931, 3591, 5793, 10773, 13517, 17379, 36689, 40551, 52137, 110067, 121653, 156411, 256823, 330201, 364959, 770469, 990603, 1094877, 2311407, 2971809, 6934221, 20802663]

約数ペア:

[(1, 20802663), (3, 6934221), (7, 2971809), (9, 2311407), (19, 1094877), (21, 990603), (27, 770469), (57, 364959), (63, 330201), (81, 256823), (133, 156411), (171, 121653), (189, 110067), (399, 52137), (513, 40551), (567, 36689), (1197, 17379), (1539, 13517), (1931, 10773), (3591, 5793)]