28878915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 53415936

約数和(自身を除く): 24537021

約数列:

[1, 3, 5, 13, 15, 23, 39, 47, 65, 69, 115, 137, 141, 195, 235, 299, 345, 411, 611, 685, 705, 897, 1081, 1495, 1781, 1833, 2055, 3055, 3151, 3243, 4485, 5343, 5405, 6439, 8905, 9165, 9453, 14053, 15755, 16215, 19317, 26715, 32195, 40963, 42159, 47265, 70265, 83707, 96585, 122889, 148097, 204815, 210795, 251121, 418535, 444291, 614445, 740485, 1255605, 1925261, 2221455, 5775783, 9626305, 28878915]

約数ペア:

[(1, 28878915), (3, 9626305), (5, 5775783), (13, 2221455), (15, 1925261), (23, 1255605), (39, 740485), (47, 614445), (65, 444291), (69, 418535), (115, 251121), (137, 210795), (141, 204815), (195, 148097), (235, 122889), (299, 96585), (345, 83707), (411, 70265), (611, 47265), (685, 42159), (705, 40963), (897, 32195), (1081, 26715), (1495, 19317), (1781, 16215), (1833, 15755), (2055, 14053), (3055, 9453), (3151, 9165), (3243, 8905), (4485, 6439), (5343, 5405)]