18911840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6221}}^1$

素因数の和:6255

約数の個数: 48

約数和(自身を含む): 47038320

約数和(自身を除く): 28126480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6221, 12442, 24884, 31105, 49768, 62210, 99536, 118199, 124420, 199072, 236398, 248840, 472796, 497680, 590995, 945592, 995360, 1181990, 1891184, 2363980, 3782368, 4727960, 9455920, 18911840]

約数ペア:

[(1, 18911840), (2, 9455920), (4, 4727960), (5, 3782368), (8, 2363980), (10, 1891184), (16, 1181990), (19, 995360), (20, 945592), (32, 590995), (38, 497680), (40, 472796), (76, 248840), (80, 236398), (95, 199072), (152, 124420), (160, 118199), (190, 99536), (304, 62210), (380, 49768), (608, 31105), (760, 24884), (1520, 12442), (3040, 6221)]