28468089

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 18706311

約数列:

[1, 3, 9, 13, 23, 39, 69, 71, 117, 149, 207, 213, 299, 447, 639, 897, 923, 1341, 1633, 1937, 2691, 2769, 3427, 4899, 5811, 8307, 10281, 10579, 14697, 17433, 21229, 30843, 31737, 44551, 63687, 95211, 133653, 137527, 191061, 243317, 400959, 412581, 729951, 1237743, 2189853, 3163121, 9489363, 28468089]

約数ペア:

[(1, 28468089), (3, 9489363), (9, 3163121), (13, 2189853), (23, 1237743), (39, 729951), (69, 412581), (71, 400959), (117, 243317), (149, 191061), (207, 137527), (213, 133653), (299, 95211), (447, 63687), (639, 44551), (897, 31737), (923, 30843), (1341, 21229), (1633, 17433), (1937, 14697), (2691, 10579), (2769, 10281), (3427, 8307), (4899, 5811)]