28985697

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 51386400

約数和(自身を除く): 22400703

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 59, 117, 153, 169, 171, 177, 221, 247, 323, 507, 531, 663, 741, 767, 969, 1003, 1121, 1521, 1989, 2223, 2301, 2873, 2907, 3009, 3211, 3363, 4199, 6903, 8619, 9027, 9633, 9971, 10089, 12597, 13039, 14573, 19057, 25857, 28899, 29913, 37791, 39117, 43719, 54587, 57171, 89739, 117351, 131157, 163761, 169507, 171513, 189449, 247741, 491283, 508521, 568347, 743223, 1525563, 1705041, 2229669, 3220633, 9661899, 28985697]

約数ペア:

[(1, 28985697), (3, 9661899), (9, 3220633), (13, 2229669), (17, 1705041), (19, 1525563), (39, 743223), (51, 568347), (57, 508521), (59, 491283), (117, 247741), (153, 189449), (169, 171513), (171, 169507), (177, 163761), (221, 131157), (247, 117351), (323, 89739), (507, 57171), (531, 54587), (663, 43719), (741, 39117), (767, 37791), (969, 29913), (1003, 28899), (1121, 25857), (1521, 19057), (1989, 14573), (2223, 13039), (2301, 12597), (2873, 10089), (2907, 9971), (3009, 9633), (3211, 9027), (3363, 8619), (4199, 6903)]