399778885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1789}}^1$

素因数の和:2061

約数の個数: 32

約数和(自身を含む): 556761600

約数和(自身を除く): 156982715

約数列:

[1, 5, 11, 17, 55, 85, 187, 239, 935, 1195, 1789, 2629, 4063, 8945, 13145, 19679, 20315, 30413, 44693, 98395, 152065, 223465, 334543, 427571, 1672715, 2137855, 4703281, 7268707, 23516405, 36343535, 79955777, 399778885]

約数ペア:

[(1, 399778885), (5, 79955777), (11, 36343535), (17, 23516405), (55, 7268707), (85, 4703281), (187, 2137855), (239, 1672715), (935, 427571), (1195, 334543), (1789, 223465), (2629, 152065), (4063, 98395), (8945, 44693), (13145, 30413), (19679, 20315)]