2009840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 5541312

約数和(自身を除く): 3531472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 97, 112, 140, 148, 185, 194, 259, 280, 296, 370, 388, 485, 518, 560, 592, 679, 740, 776, 970, 1036, 1295, 1358, 1480, 1552, 1940, 2072, 2590, 2716, 2960, 3395, 3589, 3880, 4144, 5180, 5432, 6790, 7178, 7760, 10360, 10864, 13580, 14356, 17945, 20720, 25123, 27160, 28712, 35890, 50246, 54320, 57424, 71780, 100492, 125615, 143560, 200984, 251230, 287120, 401968, 502460, 1004920, 2009840]

約数ペア:

[(1, 2009840), (2, 1004920), (4, 502460), (5, 401968), (7, 287120), (8, 251230), (10, 200984), (14, 143560), (16, 125615), (20, 100492), (28, 71780), (35, 57424), (37, 54320), (40, 50246), (56, 35890), (70, 28712), (74, 27160), (80, 25123), (97, 20720), (112, 17945), (140, 14356), (148, 13580), (185, 10864), (194, 10360), (259, 7760), (280, 7178), (296, 6790), (370, 5432), (388, 5180), (485, 4144), (518, 3880), (560, 3589), (592, 3395), (679, 2960), (740, 2716), (776, 2590), (970, 2072), (1036, 1940), (1295, 1552), (1358, 1480)]