978978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 2644992

約数和(自身を除く): 1666014

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 143, 154, 163, 182, 231, 273, 286, 326, 429, 462, 489, 546, 858, 978, 1001, 1141, 1793, 2002, 2119, 2282, 3003, 3423, 3586, 4238, 5379, 6006, 6357, 6846, 10758, 12551, 12714, 14833, 23309, 25102, 29666, 37653, 44499, 46618, 69927, 75306, 88998, 139854, 163163, 326326, 489489, 978978]

約数ペア:

[(1, 978978), (2, 489489), (3, 326326), (6, 163163), (7, 139854), (11, 88998), (13, 75306), (14, 69927), (21, 46618), (22, 44499), (26, 37653), (33, 29666), (39, 25102), (42, 23309), (66, 14833), (77, 12714), (78, 12551), (91, 10758), (143, 6846), (154, 6357), (163, 6006), (182, 5379), (231, 4238), (273, 3586), (286, 3423), (326, 3003), (429, 2282), (462, 2119), (489, 2002), (546, 1793), (858, 1141), (978, 1001)]