165955840

素因数分解:

$2^8\times 5^1\times {\mathrm{317}}^1\times {\mathrm{409}}^1$

素因数の和:747

約数の個数: 72

約数和(自身を含む): 399745080

約数和(自身を除く): 233789240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 317, 320, 409, 634, 640, 818, 1268, 1280, 1585, 1636, 2045, 2536, 3170, 3272, 4090, 5072, 6340, 6544, 8180, 10144, 12680, 13088, 16360, 20288, 25360, 26176, 32720, 40576, 50720, 52352, 65440, 81152, 101440, 104704, 129653, 130880, 202880, 259306, 261760, 405760, 518612, 523520, 648265, 1037224, 1296530, 2074448, 2593060, 4148896, 5186120, 8297792, 10372240, 16595584, 20744480, 33191168, 41488960, 82977920, 165955840]

約数ペア:

[(1, 165955840), (2, 82977920), (4, 41488960), (5, 33191168), (8, 20744480), (10, 16595584), (16, 10372240), (20, 8297792), (32, 5186120), (40, 4148896), (64, 2593060), (80, 2074448), (128, 1296530), (160, 1037224), (256, 648265), (317, 523520), (320, 518612), (409, 405760), (634, 261760), (640, 259306), (818, 202880), (1268, 130880), (1280, 129653), (1585, 104704), (1636, 101440), (2045, 81152), (2536, 65440), (3170, 52352), (3272, 50720), (4090, 40576), (5072, 32720), (6340, 26176), (6544, 25360), (8180, 20288), (10144, 16360), (12680, 13088)]