21286977124

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{919}}^1\times {\mathrm{20177}}^1$

素因数の和:21148

約数の個数: 48

約数和(自身を含む): 43661963520

約数和(自身を除く): 22374986396

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 919, 1148, 1838, 3676, 6433, 12866, 20177, 25732, 37679, 40354, 75358, 80708, 141239, 150716, 263753, 282478, 527506, 564956, 827257, 1055012, 1654514, 3309028, 5790799, 11581598, 18542663, 23163196, 37085326, 74170652, 129798641, 259597282, 519194564, 760249183, 1520498366, 3040996732, 5321744281, 10643488562, 21286977124]

約数ペア:

[(1, 21286977124), (2, 10643488562), (4, 5321744281), (7, 3040996732), (14, 1520498366), (28, 760249183), (41, 519194564), (82, 259597282), (164, 129798641), (287, 74170652), (574, 37085326), (919, 23163196), (1148, 18542663), (1838, 11581598), (3676, 5790799), (6433, 3309028), (12866, 1654514), (20177, 1055012), (25732, 827257), (37679, 564956), (40354, 527506), (75358, 282478), (80708, 263753), (141239, 150716)]