21145936

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^2\times {\mathrm{523}}^1$

素因数の和:576

約数の個数: 60

約数和(自身を含む): 49511712

約数和(自身を除く): 28365776

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 361, 523, 532, 722, 1046, 1064, 1444, 2092, 2128, 2527, 2888, 3661, 4184, 5054, 5776, 7322, 8368, 9937, 10108, 14644, 19874, 20216, 29288, 39748, 40432, 58576, 69559, 79496, 139118, 158992, 188803, 278236, 377606, 556472, 755212, 1112944, 1321621, 1510424, 2643242, 3020848, 5286484, 10572968, 21145936]

約数ペア:

[(1, 21145936), (2, 10572968), (4, 5286484), (7, 3020848), (8, 2643242), (14, 1510424), (16, 1321621), (19, 1112944), (28, 755212), (38, 556472), (56, 377606), (76, 278236), (112, 188803), (133, 158992), (152, 139118), (266, 79496), (304, 69559), (361, 58576), (523, 40432), (532, 39748), (722, 29288), (1046, 20216), (1064, 19874), (1444, 14644), (2092, 10108), (2128, 9937), (2527, 8368), (2888, 7322), (3661, 5776), (4184, 5054)]