20891472

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{641}}^1$

素因数の和:756

約数の個数: 80

約数和(自身を含む): 62412672

約数和(自身を除く): 41521200

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 97, 112, 168, 194, 291, 336, 388, 582, 641, 679, 776, 1164, 1282, 1358, 1552, 1923, 2037, 2328, 2564, 2716, 3846, 4074, 4487, 4656, 5128, 5432, 7692, 8148, 8974, 10256, 10864, 13461, 15384, 16296, 17948, 26922, 30768, 32592, 35896, 53844, 62177, 71792, 107688, 124354, 186531, 215376, 248708, 373062, 435239, 497416, 746124, 870478, 994832, 1305717, 1492248, 1740956, 2611434, 2984496, 3481912, 5222868, 6963824, 10445736, 20891472]

約数ペア:

[(1, 20891472), (2, 10445736), (3, 6963824), (4, 5222868), (6, 3481912), (7, 2984496), (8, 2611434), (12, 1740956), (14, 1492248), (16, 1305717), (21, 994832), (24, 870478), (28, 746124), (42, 497416), (48, 435239), (56, 373062), (84, 248708), (97, 215376), (112, 186531), (168, 124354), (194, 107688), (291, 71792), (336, 62177), (388, 53844), (582, 35896), (641, 32592), (679, 30768), (776, 26922), (1164, 17948), (1282, 16296), (1358, 15384), (1552, 13461), (1923, 10864), (2037, 10256), (2328, 8974), (2564, 8148), (2716, 7692), (3846, 5432), (4074, 5128), (4487, 4656)]