18438400

素因数分解:

$2^8\times 5^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:136

約数の個数: 108

約数和(自身を含む): 47396272

約数和(自身を除く): 28957872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 67, 80, 86, 100, 128, 134, 160, 172, 200, 215, 256, 268, 320, 335, 344, 400, 430, 536, 640, 670, 688, 800, 860, 1072, 1075, 1280, 1340, 1376, 1600, 1675, 1720, 2144, 2150, 2680, 2752, 2881, 3200, 3350, 3440, 4288, 4300, 5360, 5504, 5762, 6400, 6700, 6880, 8576, 8600, 10720, 11008, 11524, 13400, 13760, 14405, 17152, 17200, 21440, 23048, 26800, 27520, 28810, 34400, 42880, 46096, 53600, 55040, 57620, 68800, 72025, 85760, 92192, 107200, 115240, 137600, 144050, 184384, 214400, 230480, 275200, 288100, 368768, 428800, 460960, 576200, 737536, 921920, 1152400, 1843840, 2304800, 3687680, 4609600, 9219200, 18438400]

約数ペア:

[(1, 18438400), (2, 9219200), (4, 4609600), (5, 3687680), (8, 2304800), (10, 1843840), (16, 1152400), (20, 921920), (25, 737536), (32, 576200), (40, 460960), (43, 428800), (50, 368768), (64, 288100), (67, 275200), (80, 230480), (86, 214400), (100, 184384), (128, 144050), (134, 137600), (160, 115240), (172, 107200), (200, 92192), (215, 85760), (256, 72025), (268, 68800), (320, 57620), (335, 55040), (344, 53600), (400, 46096), (430, 42880), (536, 34400), (640, 28810), (670, 27520), (688, 26800), (800, 23048), (860, 21440), (1072, 17200), (1075, 17152), (1280, 14405), (1340, 13760), (1376, 13400), (1600, 11524), (1675, 11008), (1720, 10720), (2144, 8600), (2150, 8576), (2680, 6880), (2752, 6700), (2881, 6400), (3200, 5762), (3350, 5504), (3440, 5360), (4288, 4300)]