20972336

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:642

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 31524304

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 29, 44, 56, 58, 77, 88, 112, 116, 154, 176, 203, 232, 308, 319, 406, 464, 587, 616, 638, 812, 1174, 1232, 1276, 1624, 2233, 2348, 2552, 3248, 4109, 4466, 4696, 5104, 6457, 8218, 8932, 9392, 12914, 16436, 17023, 17864, 25828, 32872, 34046, 35728, 45199, 51656, 65744, 68092, 90398, 103312, 119161, 136184, 180796, 187253, 238322, 272368, 361592, 374506, 476644, 723184, 749012, 953288, 1310771, 1498024, 1906576, 2621542, 2996048, 5243084, 10486168, 20972336]

約数ペア:

[(1, 20972336), (2, 10486168), (4, 5243084), (7, 2996048), (8, 2621542), (11, 1906576), (14, 1498024), (16, 1310771), (22, 953288), (28, 749012), (29, 723184), (44, 476644), (56, 374506), (58, 361592), (77, 272368), (88, 238322), (112, 187253), (116, 180796), (154, 136184), (176, 119161), (203, 103312), (232, 90398), (308, 68092), (319, 65744), (406, 51656), (464, 45199), (587, 35728), (616, 34046), (638, 32872), (812, 25828), (1174, 17864), (1232, 17023), (1276, 16436), (1624, 12914), (2233, 9392), (2348, 8932), (2552, 8218), (3248, 6457), (4109, 5104), (4466, 4696)]