28164080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2647}}^1$

素因数の和:2686

約数の個数: 80

約数和(自身を含む): 78804480

約数和(自身を除く): 50640400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2647, 2660, 5294, 5320, 10588, 10640, 13235, 18529, 21176, 26470, 37058, 42352, 50293, 52940, 74116, 92645, 100586, 105880, 148232, 185290, 201172, 211760, 251465, 296464, 352051, 370580, 402344, 502930, 704102, 741160, 804688, 1005860, 1408204, 1482320, 1760255, 2011720, 2816408, 3520510, 4023440, 5632816, 7041020, 14082040, 28164080]

約数ペア:

[(1, 28164080), (2, 14082040), (4, 7041020), (5, 5632816), (7, 4023440), (8, 3520510), (10, 2816408), (14, 2011720), (16, 1760255), (19, 1482320), (20, 1408204), (28, 1005860), (35, 804688), (38, 741160), (40, 704102), (56, 502930), (70, 402344), (76, 370580), (80, 352051), (95, 296464), (112, 251465), (133, 211760), (140, 201172), (152, 185290), (190, 148232), (266, 105880), (280, 100586), (304, 92645), (380, 74116), (532, 52940), (560, 50293), (665, 42352), (760, 37058), (1064, 26470), (1330, 21176), (1520, 18529), (2128, 13235), (2647, 10640), (2660, 10588), (5294, 5320)]