21189356783

素因数分解:

$7^1\times {\mathrm{127}}^1\times {\mathrm{1223}}^1\times {\mathrm{19489}}^1$

素因数の和:20846

約数の個数: 16

約数和(自身を含む): 24428298240

約数和(自身を除く): 3238941457

約数列:

[1, 7, 127, 889, 1223, 8561, 19489, 136423, 155321, 1087247, 2475103, 17325721, 23835047, 166845329, 3027050969, 21189356783]

約数ペア:

[(1, 21189356783), (7, 3027050969), (127, 166845329), (889, 23835047), (1223, 17325721), (8561, 2475103), (19489, 1087247), (136423, 155321)]