19887040

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2143}}^1$

素因数の和:2189

約数の個数: 56

約数和(自身を含む): 49011840

約数和(自身を除く): 29124800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2143, 2320, 4286, 4640, 8572, 9280, 10715, 17144, 21430, 34288, 42860, 62147, 68576, 85720, 124294, 137152, 171440, 248588, 310735, 342880, 497176, 621470, 685760, 994352, 1242940, 1988704, 2485880, 3977408, 4971760, 9943520, 19887040]

約数ペア:

[(1, 19887040), (2, 9943520), (4, 4971760), (5, 3977408), (8, 2485880), (10, 1988704), (16, 1242940), (20, 994352), (29, 685760), (32, 621470), (40, 497176), (58, 342880), (64, 310735), (80, 248588), (116, 171440), (145, 137152), (160, 124294), (232, 85720), (290, 68576), (320, 62147), (464, 42860), (580, 34288), (928, 21430), (1160, 17144), (1856, 10715), (2143, 9280), (2320, 8572), (4286, 4640)]