20011840

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2719}}^1$

素因数の和:2759

約数の個数: 56

約数和(自身を含む): 49743360

約数和(自身を除く): 29731520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 160, 184, 230, 320, 368, 460, 736, 920, 1472, 1840, 2719, 3680, 5438, 7360, 10876, 13595, 21752, 27190, 43504, 54380, 62537, 87008, 108760, 125074, 174016, 217520, 250148, 312685, 435040, 500296, 625370, 870080, 1000592, 1250740, 2001184, 2501480, 4002368, 5002960, 10005920, 20011840]

約数ペア:

[(1, 20011840), (2, 10005920), (4, 5002960), (5, 4002368), (8, 2501480), (10, 2001184), (16, 1250740), (20, 1000592), (23, 870080), (32, 625370), (40, 500296), (46, 435040), (64, 312685), (80, 250148), (92, 217520), (115, 174016), (160, 125074), (184, 108760), (230, 87008), (320, 62537), (368, 54380), (460, 43504), (736, 27190), (920, 21752), (1472, 13595), (1840, 10876), (2719, 7360), (3680, 5438)]