18428800

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:480

約数の個数: 96

約数和(自身を含む): 49137480

約数和(自身を除く): 30708680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 260, 320, 325, 400, 416, 443, 520, 640, 650, 800, 832, 886, 1040, 1300, 1600, 1664, 1772, 2080, 2215, 2600, 3200, 3544, 4160, 4430, 5200, 5759, 7088, 8320, 8860, 10400, 11075, 11518, 14176, 17720, 20800, 22150, 23036, 28352, 28795, 35440, 41600, 44300, 46072, 56704, 57590, 70880, 88600, 92144, 115180, 141760, 143975, 177200, 184288, 230360, 283520, 287950, 354400, 368576, 460720, 575900, 708800, 737152, 921440, 1151800, 1417600, 1842880, 2303600, 3685760, 4607200, 9214400, 18428800]

約数ペア:

[(1, 18428800), (2, 9214400), (4, 4607200), (5, 3685760), (8, 2303600), (10, 1842880), (13, 1417600), (16, 1151800), (20, 921440), (25, 737152), (26, 708800), (32, 575900), (40, 460720), (50, 368576), (52, 354400), (64, 287950), (65, 283520), (80, 230360), (100, 184288), (104, 177200), (128, 143975), (130, 141760), (160, 115180), (200, 92144), (208, 88600), (260, 70880), (320, 57590), (325, 56704), (400, 46072), (416, 44300), (443, 41600), (520, 35440), (640, 28795), (650, 28352), (800, 23036), (832, 22150), (886, 20800), (1040, 17720), (1300, 14176), (1600, 11518), (1664, 11075), (1772, 10400), (2080, 8860), (2215, 8320), (2600, 7088), (3200, 5759), (3544, 5200), (4160, 4430)]