26495020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 57859200

約数和(自身を除く): 31364180

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 409, 410, 790, 818, 820, 1580, 1636, 2045, 3239, 4090, 6478, 8180, 12956, 16195, 16769, 32311, 32390, 33538, 64622, 64780, 67076, 83845, 129244, 161555, 167690, 323110, 335380, 646220, 1324751, 2649502, 5299004, 6623755, 13247510, 26495020]

約数ペア:

[(1, 26495020), (2, 13247510), (4, 6623755), (5, 5299004), (10, 2649502), (20, 1324751), (41, 646220), (79, 335380), (82, 323110), (158, 167690), (164, 161555), (205, 129244), (316, 83845), (395, 67076), (409, 64780), (410, 64622), (790, 33538), (818, 32390), (820, 32311), (1580, 16769), (1636, 16195), (2045, 12956), (3239, 8180), (4090, 6478)]