19995753609

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{780383}}^1$

素因数の和:780478

約数の個数: 32

約数和(自身を含む): 32339112960

約数和(自身を除く): 12343359351

約数列:

[1, 3, 9, 13, 27, 39, 73, 117, 219, 351, 657, 949, 1971, 2847, 8541, 25623, 780383, 2341149, 7023447, 10144979, 21070341, 30434937, 56967959, 91304811, 170903877, 273914433, 512711631, 740583467, 1538134893, 2221750401, 6665251203, 19995753609]

約数ペア:

[(1, 19995753609), (3, 6665251203), (9, 2221750401), (13, 1538134893), (27, 740583467), (39, 512711631), (73, 273914433), (117, 170903877), (219, 91304811), (351, 56967959), (657, 30434937), (949, 21070341), (1971, 10144979), (2847, 7023447), (8541, 2341149), (25623, 780383)]