80195920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2017}}^1$

素因数の和:2108

約数の個数: 80

約数和(自身を含む): 216200448

約数和(自身を除く): 136004528

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 2017, 2485, 2840, 3976, 4034, 4970, 5680, 7952, 8068, 9940, 10085, 14119, 16136, 19880, 20170, 28238, 32272, 39760, 40340, 56476, 70595, 80680, 112952, 141190, 143207, 161360, 225904, 282380, 286414, 564760, 572828, 716035, 1002449, 1129520, 1145656, 1432070, 2004898, 2291312, 2864140, 4009796, 5012245, 5728280, 8019592, 10024490, 11456560, 16039184, 20048980, 40097960, 80195920]

約数ペア:

[(1, 80195920), (2, 40097960), (4, 20048980), (5, 16039184), (7, 11456560), (8, 10024490), (10, 8019592), (14, 5728280), (16, 5012245), (20, 4009796), (28, 2864140), (35, 2291312), (40, 2004898), (56, 1432070), (70, 1145656), (71, 1129520), (80, 1002449), (112, 716035), (140, 572828), (142, 564760), (280, 286414), (284, 282380), (355, 225904), (497, 161360), (560, 143207), (568, 141190), (710, 112952), (994, 80680), (1136, 70595), (1420, 56476), (1988, 40340), (2017, 39760), (2485, 32272), (2840, 28238), (3976, 20170), (4034, 19880), (4970, 16136), (5680, 14119), (7952, 10085), (8068, 9940)]