19418380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{373}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 43354080

約数和(自身を除く): 23935700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 137, 190, 274, 373, 380, 548, 685, 746, 1370, 1492, 1865, 2603, 2740, 3730, 5206, 7087, 7460, 10412, 13015, 14174, 26030, 28348, 35435, 51101, 52060, 70870, 102202, 141740, 204404, 255505, 511010, 970919, 1022020, 1941838, 3883676, 4854595, 9709190, 19418380]

約数ペア:

[(1, 19418380), (2, 9709190), (4, 4854595), (5, 3883676), (10, 1941838), (19, 1022020), (20, 970919), (38, 511010), (76, 255505), (95, 204404), (137, 141740), (190, 102202), (274, 70870), (373, 52060), (380, 51101), (548, 35435), (685, 28348), (746, 26030), (1370, 14174), (1492, 13015), (1865, 10412), (2603, 7460), (2740, 7087), (3730, 5206)]