18490017

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:873

約数の個数: 32

約数和(自身を含む): 30723840

約数和(自身を除く): 12233823

約数列:

[1, 3, 7, 13, 21, 39, 89, 91, 267, 273, 623, 761, 1157, 1869, 2283, 3471, 5327, 8099, 9893, 15981, 24297, 29679, 67729, 69251, 203187, 207753, 474103, 880477, 1422309, 2641431, 6163339, 18490017]

約数ペア:

[(1, 18490017), (3, 6163339), (7, 2641431), (13, 1422309), (21, 880477), (39, 474103), (89, 207753), (91, 203187), (267, 69251), (273, 67729), (623, 29679), (761, 24297), (1157, 15981), (1869, 9893), (2283, 8099), (3471, 5327)]