18706720

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2719}}^1$

素因数の和:2777

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 26532320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2719, 3440, 5438, 6880, 10876, 13595, 21752, 27190, 43504, 54380, 87008, 108760, 116917, 217520, 233834, 435040, 467668, 584585, 935336, 1169170, 1870672, 2338340, 3741344, 4676680, 9353360, 18706720]

約数ペア:

[(1, 18706720), (2, 9353360), (4, 4676680), (5, 3741344), (8, 2338340), (10, 1870672), (16, 1169170), (20, 935336), (32, 584585), (40, 467668), (43, 435040), (80, 233834), (86, 217520), (160, 116917), (172, 108760), (215, 87008), (344, 54380), (430, 43504), (688, 27190), (860, 21752), (1376, 13595), (1720, 10876), (2719, 6880), (3440, 5438)]