16381280

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2381}}^1$

素因数の和:2439

約数の個数: 48

約数和(自身を含む): 39617424

約数和(自身を除く): 23236144

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, 2381, 3440, 4762, 6880, 9524, 11905, 19048, 23810, 38096, 47620, 76192, 95240, 102383, 190480, 204766, 380960, 409532, 511915, 819064, 1023830, 1638128, 2047660, 3276256, 4095320, 8190640, 16381280]

約数ペア:

[(1, 16381280), (2, 8190640), (4, 4095320), (5, 3276256), (8, 2047660), (10, 1638128), (16, 1023830), (20, 819064), (32, 511915), (40, 409532), (43, 380960), (80, 204766), (86, 190480), (160, 102383), (172, 95240), (215, 76192), (344, 47620), (430, 38096), (688, 23810), (860, 19048), (1376, 11905), (1720, 9524), (2381, 6880), (3440, 4762)]