20335568

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{509}}^1$

素因数の和:755

約数の個数: 40

約数和(自身を含む): 43256160

約数和(自身を除く): 22920592

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 227, 454, 509, 908, 1018, 1816, 2036, 2497, 3632, 4072, 4994, 5599, 8144, 9988, 11198, 19976, 22396, 39952, 44792, 89584, 115543, 231086, 462172, 924344, 1270973, 1848688, 2541946, 5083892, 10167784, 20335568]

約数ペア:

[(1, 20335568), (2, 10167784), (4, 5083892), (8, 2541946), (11, 1848688), (16, 1270973), (22, 924344), (44, 462172), (88, 231086), (176, 115543), (227, 89584), (454, 44792), (509, 39952), (908, 22396), (1018, 19976), (1816, 11198), (2036, 9988), (2497, 8144), (3632, 5599), (4072, 4994)]