21816963

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{11171}}^1$

素因数の和:11215

約数の個数: 24

約数和(自身を含む): 37180416

約数和(自身を除く): 15363453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 11171, 33513, 78197, 100539, 234591, 346301, 703773, 1038903, 2424107, 3116709, 7272321, 21816963]

約数ペア:

[(1, 21816963), (3, 7272321), (7, 3116709), (9, 2424107), (21, 1038903), (31, 703773), (63, 346301), (93, 234591), (217, 100539), (279, 78197), (651, 33513), (1953, 11171)]