21306536

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 40995840

約数和(自身を除く): 19689304

約数列:

[1, 2, 4, 8, 67, 127, 134, 254, 268, 313, 508, 536, 626, 1016, 1252, 2504, 8509, 17018, 20971, 34036, 39751, 41942, 68072, 79502, 83884, 159004, 167768, 318008, 2663317, 5326634, 10653268, 21306536]

約数ペア:

[(1, 21306536), (2, 10653268), (4, 5326634), (8, 2663317), (67, 318008), (127, 167768), (134, 159004), (254, 83884), (268, 79502), (313, 68072), (508, 41942), (536, 39751), (626, 34036), (1016, 20971), (1252, 17018), (2504, 8509)]