21257376

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{4519}}^1$

素因数の和:4546

約数の個数: 72

約数和(自身を含む): 64925280

約数和(自身を除く): 43667904

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 84, 96, 98, 112, 147, 168, 196, 224, 294, 336, 392, 588, 672, 784, 1176, 1568, 2352, 4519, 4704, 9038, 13557, 18076, 27114, 31633, 36152, 54228, 63266, 72304, 94899, 108456, 126532, 144608, 189798, 216912, 221431, 253064, 379596, 433824, 442862, 506128, 664293, 759192, 885724, 1012256, 1328586, 1518384, 1771448, 2657172, 3036768, 3542896, 5314344, 7085792, 10628688, 21257376]

約数ペア:

[(1, 21257376), (2, 10628688), (3, 7085792), (4, 5314344), (6, 3542896), (7, 3036768), (8, 2657172), (12, 1771448), (14, 1518384), (16, 1328586), (21, 1012256), (24, 885724), (28, 759192), (32, 664293), (42, 506128), (48, 442862), (49, 433824), (56, 379596), (84, 253064), (96, 221431), (98, 216912), (112, 189798), (147, 144608), (168, 126532), (196, 108456), (224, 94899), (294, 72304), (336, 63266), (392, 54228), (588, 36152), (672, 31633), (784, 27114), (1176, 18076), (1568, 13557), (2352, 9038), (4519, 4704)]