18320480

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1709}}^1$

素因数の和:1791

約数の個数: 48

約数和(自身を含む): 43953840

約数和(自身を除く): 25633360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1709, 2144, 2680, 3418, 5360, 6836, 8545, 10720, 13672, 17090, 27344, 34180, 54688, 68360, 114503, 136720, 229006, 273440, 458012, 572515, 916024, 1145030, 1832048, 2290060, 3664096, 4580120, 9160240, 18320480]

約数ペア:

[(1, 18320480), (2, 9160240), (4, 4580120), (5, 3664096), (8, 2290060), (10, 1832048), (16, 1145030), (20, 916024), (32, 572515), (40, 458012), (67, 273440), (80, 229006), (134, 136720), (160, 114503), (268, 68360), (335, 54688), (536, 34180), (670, 27344), (1072, 17090), (1340, 13672), (1709, 10720), (2144, 8545), (2680, 6836), (3418, 5360)]