28158256

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:698

約数の個数: 80

約数和(自身を含む): 68995584

約数和(自身を除く): 40837328

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 23, 28, 34, 46, 56, 68, 92, 112, 119, 136, 161, 184, 238, 272, 322, 368, 391, 476, 643, 644, 782, 952, 1286, 1288, 1564, 1904, 2572, 2576, 2737, 3128, 4501, 5144, 5474, 6256, 9002, 10288, 10931, 10948, 14789, 18004, 21862, 21896, 29578, 36008, 43724, 43792, 59156, 72016, 76517, 87448, 103523, 118312, 153034, 174896, 207046, 236624, 251413, 306068, 414092, 502826, 612136, 828184, 1005652, 1224272, 1656368, 1759891, 2011304, 3519782, 4022608, 7039564, 14079128, 28158256]

約数ペア:

[(1, 28158256), (2, 14079128), (4, 7039564), (7, 4022608), (8, 3519782), (14, 2011304), (16, 1759891), (17, 1656368), (23, 1224272), (28, 1005652), (34, 828184), (46, 612136), (56, 502826), (68, 414092), (92, 306068), (112, 251413), (119, 236624), (136, 207046), (161, 174896), (184, 153034), (238, 118312), (272, 103523), (322, 87448), (368, 76517), (391, 72016), (476, 59156), (643, 43792), (644, 43724), (782, 36008), (952, 29578), (1286, 21896), (1288, 21862), (1564, 18004), (1904, 14789), (2572, 10948), (2576, 10931), (2737, 10288), (3128, 9002), (4501, 6256), (5144, 5474)]