320550400

素因数分解:

$2^9\times 5^2\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:424

約数の個数: 120

約数和(自身を含む): 806778720

約数和(自身を除く): 486228320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 128, 158, 160, 200, 256, 316, 317, 320, 395, 400, 512, 632, 634, 640, 790, 800, 1264, 1268, 1280, 1580, 1585, 1600, 1975, 2528, 2536, 2560, 3160, 3170, 3200, 3950, 5056, 5072, 6320, 6340, 6400, 7900, 7925, 10112, 10144, 12640, 12680, 12800, 15800, 15850, 20224, 20288, 25043, 25280, 25360, 31600, 31700, 40448, 40576, 50086, 50560, 50720, 63200, 63400, 81152, 100172, 101120, 101440, 125215, 126400, 126800, 162304, 200344, 202240, 202880, 250430, 252800, 253600, 400688, 405760, 500860, 505600, 507200, 626075, 801376, 811520, 1001720, 1011200, 1014400, 1252150, 1602752, 2003440, 2028800, 2504300, 3205504, 4006880, 4057600, 5008600, 6411008, 8013760, 10017200, 12822016, 16027520, 20034400, 32055040, 40068800, 64110080, 80137600, 160275200, 320550400]

約数ペア:

[(1, 320550400), (2, 160275200), (4, 80137600), (5, 64110080), (8, 40068800), (10, 32055040), (16, 20034400), (20, 16027520), (25, 12822016), (32, 10017200), (40, 8013760), (50, 6411008), (64, 5008600), (79, 4057600), (80, 4006880), (100, 3205504), (128, 2504300), (158, 2028800), (160, 2003440), (200, 1602752), (256, 1252150), (316, 1014400), (317, 1011200), (320, 1001720), (395, 811520), (400, 801376), (512, 626075), (632, 507200), (634, 505600), (640, 500860), (790, 405760), (800, 400688), (1264, 253600), (1268, 252800), (1280, 250430), (1580, 202880), (1585, 202240), (1600, 200344), (1975, 162304), (2528, 126800), (2536, 126400), (2560, 125215), (3160, 101440), (3170, 101120), (3200, 100172), (3950, 81152), (5056, 63400), (5072, 63200), (6320, 50720), (6340, 50560), (6400, 50086), (7900, 40576), (7925, 40448), (10112, 31700), (10144, 31600), (12640, 25360), (12680, 25280), (12800, 25043), (15800, 20288), (15850, 20224)]