19990215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3733}}^1$

素因数の和:3768

約数の個数: 48

約数和(自身を含む): 41940288

約数和(自身を除く): 21950073

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3733, 5355, 11199, 18665, 26131, 33597, 55995, 63461, 78393, 130655, 167985, 190383, 235179, 317305, 391965, 444227, 571149, 951915, 1175895, 1332681, 2221135, 2855745, 3998043, 6663405, 19990215]

約数ペア:

[(1, 19990215), (3, 6663405), (5, 3998043), (7, 2855745), (9, 2221135), (15, 1332681), (17, 1175895), (21, 951915), (35, 571149), (45, 444227), (51, 391965), (63, 317305), (85, 235179), (105, 190383), (119, 167985), (153, 130655), (255, 78393), (315, 63461), (357, 55995), (595, 33597), (765, 26131), (1071, 18665), (1785, 11199), (3733, 5355)]