20562880

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4943}}^1$

素因数の和:4973

約数の個数: 56

約数和(自身を含む): 52742592

約数和(自身を除く): 32179712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4943, 9886, 19772, 24715, 39544, 49430, 64259, 79088, 98860, 128518, 158176, 197720, 257036, 316352, 321295, 395440, 514072, 642590, 790880, 1028144, 1285180, 1581760, 2056288, 2570360, 4112576, 5140720, 10281440, 20562880]

約数ペア:

[(1, 20562880), (2, 10281440), (4, 5140720), (5, 4112576), (8, 2570360), (10, 2056288), (13, 1581760), (16, 1285180), (20, 1028144), (26, 790880), (32, 642590), (40, 514072), (52, 395440), (64, 321295), (65, 316352), (80, 257036), (104, 197720), (130, 158176), (160, 128518), (208, 98860), (260, 79088), (320, 64259), (416, 49430), (520, 39544), (832, 24715), (1040, 19772), (2080, 9886), (4160, 4943)]