18506313

素因数分解:

$3^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 31967232

約数和(自身を除く): 13460919

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 127, 189, 257, 381, 567, 771, 889, 1143, 1799, 2313, 2667, 3429, 5397, 6939, 8001, 10287, 16191, 20817, 24003, 32639, 48573, 72009, 97917, 145719, 228473, 293751, 685419, 881253, 2056257, 2643759, 6168771, 18506313]

約数ペア:

[(1, 18506313), (3, 6168771), (7, 2643759), (9, 2056257), (21, 881253), (27, 685419), (63, 293751), (81, 228473), (127, 145719), (189, 97917), (257, 72009), (381, 48573), (567, 32639), (771, 24003), (889, 20817), (1143, 16191), (1799, 10287), (2313, 8001), (2667, 6939), (3429, 5397)]