138900640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{45691}}^1$

素因数の和:45725

約数の個数: 48

約数和(自身を含む): 345431520

約数和(自身を除く): 206530880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 45691, 91382, 182764, 228455, 365528, 456910, 731056, 868129, 913820, 1462112, 1736258, 1827640, 3472516, 3655280, 4340645, 6945032, 7310560, 8681290, 13890064, 17362580, 27780128, 34725160, 69450320, 138900640]

約数ペア:

[(1, 138900640), (2, 69450320), (4, 34725160), (5, 27780128), (8, 17362580), (10, 13890064), (16, 8681290), (19, 7310560), (20, 6945032), (32, 4340645), (38, 3655280), (40, 3472516), (76, 1827640), (80, 1736258), (95, 1462112), (152, 913820), (160, 868129), (190, 731056), (304, 456910), (380, 365528), (608, 228455), (760, 182764), (1520, 91382), (3040, 45691)]