21377888

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5023}}^1$

素因数の和:5059

約数の個数: 48

約数和(自身を含む): 50641920

約数和(自身を除く): 29264032

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 5023, 10046, 20092, 35161, 40184, 70322, 80368, 95437, 140644, 160736, 190874, 281288, 381748, 562576, 668059, 763496, 1125152, 1336118, 1526992, 2672236, 3053984, 5344472, 10688944, 21377888]

約数ペア:

[(1, 21377888), (2, 10688944), (4, 5344472), (7, 3053984), (8, 2672236), (14, 1526992), (16, 1336118), (19, 1125152), (28, 763496), (32, 668059), (38, 562576), (56, 381748), (76, 281288), (112, 190874), (133, 160736), (152, 140644), (224, 95437), (266, 80368), (304, 70322), (532, 40184), (608, 35161), (1064, 20092), (2128, 10046), (4256, 5023)]