18520960

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{673}}^1$

素因数の和:735

約数の個数: 64

約数和(自身を含む): 45373680

約数和(自身を除く): 26852720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 320, 344, 430, 640, 673, 688, 860, 1346, 1376, 1720, 2692, 2752, 3365, 3440, 5384, 5504, 6730, 6880, 10768, 13460, 13760, 21536, 26920, 27520, 28939, 43072, 53840, 57878, 86144, 107680, 115756, 144695, 215360, 231512, 289390, 430720, 463024, 578780, 926048, 1157560, 1852096, 2315120, 3704192, 4630240, 9260480, 18520960]

約数ペア:

[(1, 18520960), (2, 9260480), (4, 4630240), (5, 3704192), (8, 2315120), (10, 1852096), (16, 1157560), (20, 926048), (32, 578780), (40, 463024), (43, 430720), (64, 289390), (80, 231512), (86, 215360), (128, 144695), (160, 115756), (172, 107680), (215, 86144), (320, 57878), (344, 53840), (430, 43072), (640, 28939), (673, 27520), (688, 26920), (860, 21536), (1346, 13760), (1376, 13460), (1720, 10768), (2692, 6880), (2752, 6730), (3365, 5504), (3440, 5384)]