20602575

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 42917888

約数和(自身を除く): 22315313

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 103, 105, 127, 175, 225, 309, 315, 381, 515, 525, 635, 721, 889, 927, 1143, 1545, 1575, 1905, 2163, 2575, 2667, 3175, 3605, 4445, 4635, 5715, 6489, 7725, 8001, 9525, 10815, 13081, 13335, 18025, 22225, 23175, 28575, 32445, 39243, 40005, 54075, 65405, 66675, 91567, 117729, 162225, 196215, 200025, 274701, 327025, 457835, 588645, 824103, 981075, 1373505, 2289175, 2943225, 4120515, 6867525, 20602575]

約数ペア:

[(1, 20602575), (3, 6867525), (5, 4120515), (7, 2943225), (9, 2289175), (15, 1373505), (21, 981075), (25, 824103), (35, 588645), (45, 457835), (63, 327025), (75, 274701), (103, 200025), (105, 196215), (127, 162225), (175, 117729), (225, 91567), (309, 66675), (315, 65405), (381, 54075), (515, 40005), (525, 39243), (635, 32445), (721, 28575), (889, 23175), (927, 22225), (1143, 18025), (1545, 13335), (1575, 13081), (1905, 10815), (2163, 9525), (2575, 8001), (2667, 7725), (3175, 6489), (3605, 5715), (4445, 4635)]