20918688

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{4447}}^1$

素因数の和:4474

約数の個数: 72

約数和(自身を含む): 63891072

約数和(自身を除く): 42972384

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, 4447, 4704, 8894, 13341, 17788, 26682, 31129, 35576, 53364, 62258, 71152, 93387, 106728, 124516, 142304, 186774, 213456, 217903, 249032, 373548, 426912, 435806, 498064, 653709, 747096, 871612, 996128, 1307418, 1494192, 1743224, 2614836, 2988384, 3486448, 5229672, 6972896, 10459344, 20918688]

約数ペア:

[(1, 20918688), (2, 10459344), (3, 6972896), (4, 5229672), (6, 3486448), (7, 2988384), (8, 2614836), (12, 1743224), (14, 1494192), (16, 1307418), (21, 996128), (24, 871612), (28, 747096), (32, 653709), (42, 498064), (48, 435806), (49, 426912), (56, 373548), (84, 249032), (96, 217903), (98, 213456), (112, 186774), (147, 142304), (168, 124516), (196, 106728), (224, 93387), (294, 71152), (336, 62258), (392, 53364), (588, 35576), (672, 31129), (784, 26682), (1176, 17788), (1568, 13341), (2352, 8894), (4447, 4704)]