20971554

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2591}}^1$

素因数の和:2686

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 23818206

約数列:

[1, 2, 3, 6, 19, 38, 57, 71, 114, 142, 213, 426, 1349, 2591, 2698, 4047, 5182, 7773, 8094, 15546, 49229, 98458, 147687, 183961, 295374, 367922, 551883, 1103766, 3495259, 6990518, 10485777, 20971554]

約数ペア:

[(1, 20971554), (2, 10485777), (3, 6990518), (6, 3495259), (19, 1103766), (38, 551883), (57, 367922), (71, 295374), (114, 183961), (142, 147687), (213, 98458), (426, 49229), (1349, 15546), (2591, 8094), (2698, 7773), (4047, 5182)]