20446880

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2719}}^1$

素因数の和:2781

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 28904800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2719, 3760, 5438, 7520, 10876, 13595, 21752, 27190, 43504, 54380, 87008, 108760, 127793, 217520, 255586, 435040, 511172, 638965, 1022344, 1277930, 2044688, 2555860, 4089376, 5111720, 10223440, 20446880]

約数ペア:

[(1, 20446880), (2, 10223440), (4, 5111720), (5, 4089376), (8, 2555860), (10, 2044688), (16, 1277930), (20, 1022344), (32, 638965), (40, 511172), (47, 435040), (80, 255586), (94, 217520), (160, 127793), (188, 108760), (235, 87008), (376, 54380), (470, 43504), (752, 27190), (940, 21752), (1504, 13595), (1880, 10876), (2719, 7520), (3760, 5438)]