78750980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51137}}^1$

素因数の和:51164

約数の個数: 48

約数和(自身を含む): 206188416

約数和(自身を除く): 127437436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 51137, 102274, 204548, 255685, 357959, 511370, 562507, 715918, 1022740, 1125014, 1431836, 1789795, 2250028, 2812535, 3579590, 3937549, 5625070, 7159180, 7875098, 11250140, 15750196, 19687745, 39375490, 78750980]

約数ペア:

[(1, 78750980), (2, 39375490), (4, 19687745), (5, 15750196), (7, 11250140), (10, 7875098), (11, 7159180), (14, 5625070), (20, 3937549), (22, 3579590), (28, 2812535), (35, 2250028), (44, 1789795), (55, 1431836), (70, 1125014), (77, 1022740), (110, 715918), (140, 562507), (154, 511370), (220, 357959), (308, 255685), (385, 204548), (770, 102274), (1540, 51137)]