26531440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 67370688

約数和(自身を除く): 40839248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 194, 208, 260, 263, 388, 485, 520, 526, 776, 970, 1040, 1052, 1261, 1315, 1552, 1940, 2104, 2522, 2630, 3419, 3880, 4208, 5044, 5260, 6305, 6838, 7760, 10088, 10520, 12610, 13676, 17095, 20176, 21040, 25220, 25511, 27352, 34190, 50440, 51022, 54704, 68380, 100880, 102044, 127555, 136760, 204088, 255110, 273520, 331643, 408176, 510220, 663286, 1020440, 1326572, 1658215, 2040880, 2653144, 3316430, 5306288, 6632860, 13265720, 26531440]

約数ペア:

[(1, 26531440), (2, 13265720), (4, 6632860), (5, 5306288), (8, 3316430), (10, 2653144), (13, 2040880), (16, 1658215), (20, 1326572), (26, 1020440), (40, 663286), (52, 510220), (65, 408176), (80, 331643), (97, 273520), (104, 255110), (130, 204088), (194, 136760), (208, 127555), (260, 102044), (263, 100880), (388, 68380), (485, 54704), (520, 51022), (526, 50440), (776, 34190), (970, 27352), (1040, 25511), (1052, 25220), (1261, 21040), (1315, 20176), (1552, 17095), (1940, 13676), (2104, 12610), (2522, 10520), (2630, 10088), (3419, 7760), (3880, 6838), (4208, 6305), (5044, 5260)]