20976368

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{479}}^1$

素因数の和:534

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 30448912

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, 479, 644, 782, 952, 958, 1288, 1564, 1904, 1916, 2576, 2737, 3128, 3353, 3832, 5474, 6256, 6706, 7664, 8143, 10948, 11017, 13412, 16286, 21896, 22034, 26824, 32572, 43792, 44068, 53648, 57001, 65144, 77119, 88136, 114002, 130288, 154238, 176272, 187289, 228004, 308476, 374578, 456008, 616952, 749156, 912016, 1233904, 1311023, 1498312, 2622046, 2996624, 5244092, 10488184, 20976368]

約数ペア:

[(1, 20976368), (2, 10488184), (4, 5244092), (7, 2996624), (8, 2622046), (14, 1498312), (16, 1311023), (17, 1233904), (23, 912016), (28, 749156), (34, 616952), (46, 456008), (56, 374578), (68, 308476), (92, 228004), (112, 187289), (119, 176272), (136, 154238), (161, 130288), (184, 114002), (238, 88136), (272, 77119), (322, 65144), (368, 57001), (391, 53648), (476, 44068), (479, 43792), (644, 32572), (782, 26824), (952, 22034), (958, 21896), (1288, 16286), (1564, 13412), (1904, 11017), (1916, 10948), (2576, 8143), (2737, 7664), (3128, 6706), (3353, 6256), (3832, 5474)]