20882477

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 29253312

約数和(自身を除く): 8370835

約数列:

[1, 7, 11, 17, 43, 49, 53, 77, 119, 187, 301, 371, 473, 539, 583, 731, 833, 901, 1309, 2107, 2279, 2597, 3311, 4081, 5117, 6307, 8041, 9163, 9911, 15953, 23177, 25069, 28567, 35819, 38743, 44149, 56287, 69377, 111671, 175483, 271201, 394009, 426173, 485639, 1228381, 1898407, 2983211, 20882477]

約数ペア:

[(1, 20882477), (7, 2983211), (11, 1898407), (17, 1228381), (43, 485639), (49, 426173), (53, 394009), (77, 271201), (119, 175483), (187, 111671), (301, 69377), (371, 56287), (473, 44149), (539, 38743), (583, 35819), (731, 28567), (833, 25069), (901, 23177), (1309, 15953), (2107, 9911), (2279, 9163), (2597, 8041), (3311, 6307), (4081, 5117)]