20900836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 43868160

約数和(自身を除く): 22967324

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 44, 46, 76, 92, 209, 253, 418, 437, 506, 836, 874, 1012, 1087, 1748, 2174, 4348, 4807, 9614, 11957, 19228, 20653, 23914, 25001, 41306, 47828, 50002, 82612, 100004, 227183, 275011, 454366, 475019, 550022, 908732, 950038, 1100044, 1900076, 5225209, 10450418, 20900836]

約数ペア:

[(1, 20900836), (2, 10450418), (4, 5225209), (11, 1900076), (19, 1100044), (22, 950038), (23, 908732), (38, 550022), (44, 475019), (46, 454366), (76, 275011), (92, 227183), (209, 100004), (253, 82612), (418, 50002), (437, 47828), (506, 41306), (836, 25001), (874, 23914), (1012, 20653), (1087, 19228), (1748, 11957), (2174, 9614), (4348, 4807)]