20487456

素因数分解:

$2^5\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:279

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45556704

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 29, 32, 33, 36, 44, 48, 58, 66, 72, 87, 88, 96, 99, 116, 132, 144, 174, 176, 198, 223, 232, 261, 264, 288, 319, 348, 352, 396, 446, 464, 522, 528, 638, 669, 696, 792, 892, 928, 957, 1044, 1056, 1276, 1338, 1392, 1584, 1784, 1914, 2007, 2088, 2453, 2552, 2676, 2784, 2871, 3168, 3568, 3828, 4014, 4176, 4906, 5104, 5352, 5742, 6467, 7136, 7359, 7656, 8028, 8352, 9812, 10208, 10704, 11484, 12934, 14718, 15312, 16056, 19401, 19624, 21408, 22077, 22968, 25868, 29436, 30624, 32112, 38802, 39248, 44154, 45936, 51736, 58203, 58872, 64224, 71137, 77604, 78496, 88308, 91872, 103472, 116406, 117744, 142274, 155208, 176616, 206944, 213411, 232812, 235488, 284548, 310416, 353232, 426822, 465624, 569096, 620832, 640233, 706464, 853644, 931248, 1138192, 1280466, 1707288, 1862496, 2276384, 2560932, 3414576, 5121864, 6829152, 10243728, 20487456]

約数ペア:

[(1, 20487456), (2, 10243728), (3, 6829152), (4, 5121864), (6, 3414576), (8, 2560932), (9, 2276384), (11, 1862496), (12, 1707288), (16, 1280466), (18, 1138192), (22, 931248), (24, 853644), (29, 706464), (32, 640233), (33, 620832), (36, 569096), (44, 465624), (48, 426822), (58, 353232), (66, 310416), (72, 284548), (87, 235488), (88, 232812), (96, 213411), (99, 206944), (116, 176616), (132, 155208), (144, 142274), (174, 117744), (176, 116406), (198, 103472), (223, 91872), (232, 88308), (261, 78496), (264, 77604), (288, 71137), (319, 64224), (348, 58872), (352, 58203), (396, 51736), (446, 45936), (464, 44154), (522, 39248), (528, 38802), (638, 32112), (669, 30624), (696, 29436), (792, 25868), (892, 22968), (928, 22077), (957, 21408), (1044, 19624), (1056, 19401), (1276, 16056), (1338, 15312), (1392, 14718), (1584, 12934), (1784, 11484), (1914, 10704), (2007, 10208), (2088, 9812), (2453, 8352), (2552, 8028), (2676, 7656), (2784, 7359), (2871, 7136), (3168, 6467), (3568, 5742), (3828, 5352), (4014, 5104), (4176, 4906)]