289041775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 427472640

約数和(自身を除く): 138430865

約数列:

[1, 5, 11, 19, 25, 47, 55, 95, 107, 121, 209, 235, 275, 475, 517, 535, 605, 893, 1045, 1175, 1177, 2033, 2299, 2585, 2675, 3025, 4465, 5029, 5225, 5687, 5885, 9823, 10165, 11495, 12925, 12947, 22325, 22363, 25145, 28435, 29425, 49115, 50825, 55319, 57475, 64735, 95551, 108053, 111815, 125725, 142175, 245575, 245993, 276595, 323675, 477755, 540265, 559075, 608509, 1051061, 1229965, 1382975, 2388775, 2701325, 3042545, 5255305, 6149825, 11561671, 15212725, 26276525, 57808355, 289041775]

約数ペア:

[(1, 289041775), (5, 57808355), (11, 26276525), (19, 15212725), (25, 11561671), (47, 6149825), (55, 5255305), (95, 3042545), (107, 2701325), (121, 2388775), (209, 1382975), (235, 1229965), (275, 1051061), (475, 608509), (517, 559075), (535, 540265), (605, 477755), (893, 323675), (1045, 276595), (1175, 245993), (1177, 245575), (2033, 142175), (2299, 125725), (2585, 111815), (2675, 108053), (3025, 95551), (4465, 64735), (5029, 57475), (5225, 55319), (5687, 50825), (5885, 49115), (9823, 29425), (10165, 28435), (11495, 25145), (12925, 22363), (12947, 22325)]