20011978

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{3271}}^1$

素因数の和:3322

約数の個数: 32

約数和(自身を含む): 37693440

約数和(自身を除く): 17681462

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 133, 161, 266, 322, 437, 874, 3059, 3271, 6118, 6542, 22897, 45794, 62149, 75233, 124298, 150466, 435043, 526631, 870086, 1053262, 1429427, 2858854, 10005989, 20011978]

約数ペア:

[(1, 20011978), (2, 10005989), (7, 2858854), (14, 1429427), (19, 1053262), (23, 870086), (38, 526631), (46, 435043), (133, 150466), (161, 124298), (266, 75233), (322, 62149), (437, 45794), (874, 22897), (3059, 6542), (3271, 6118)]