128220160

素因数分解:

$2^{10}\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:421

約数の個数: 88

約数和(自身を含む): 312454080

約数和(自身を除く): 184233920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 317, 320, 395, 512, 632, 634, 640, 790, 1024, 1264, 1268, 1280, 1580, 1585, 2528, 2536, 2560, 3160, 3170, 5056, 5072, 5120, 6320, 6340, 10112, 10144, 12640, 12680, 20224, 20288, 25043, 25280, 25360, 40448, 40576, 50086, 50560, 50720, 80896, 81152, 100172, 101120, 101440, 125215, 162304, 200344, 202240, 202880, 250430, 324608, 400688, 404480, 405760, 500860, 801376, 811520, 1001720, 1602752, 1623040, 2003440, 3205504, 4006880, 6411008, 8013760, 12822016, 16027520, 25644032, 32055040, 64110080, 128220160]

約数ペア:

[(1, 128220160), (2, 64110080), (4, 32055040), (5, 25644032), (8, 16027520), (10, 12822016), (16, 8013760), (20, 6411008), (32, 4006880), (40, 3205504), (64, 2003440), (79, 1623040), (80, 1602752), (128, 1001720), (158, 811520), (160, 801376), (256, 500860), (316, 405760), (317, 404480), (320, 400688), (395, 324608), (512, 250430), (632, 202880), (634, 202240), (640, 200344), (790, 162304), (1024, 125215), (1264, 101440), (1268, 101120), (1280, 100172), (1580, 81152), (1585, 80896), (2528, 50720), (2536, 50560), (2560, 50086), (3160, 40576), (3170, 40448), (5056, 25360), (5072, 25280), (5120, 25043), (6320, 20288), (6340, 20224), (10112, 12680), (10144, 12640)]