21454496

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^2$

素因数の和:178

約数の個数: 72

約数和(自身を含む): 51539040

約数和(自身を除く): 30084544

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 71, 76, 112, 133, 142, 152, 224, 266, 284, 304, 497, 532, 568, 608, 994, 1064, 1136, 1349, 1988, 2128, 2272, 2698, 3976, 4256, 5041, 5396, 7952, 9443, 10082, 10792, 15904, 18886, 20164, 21584, 35287, 37772, 40328, 43168, 70574, 75544, 80656, 95779, 141148, 151088, 161312, 191558, 282296, 302176, 383116, 564592, 670453, 766232, 1129184, 1340906, 1532464, 2681812, 3064928, 5363624, 10727248, 21454496]

約数ペア:

[(1, 21454496), (2, 10727248), (4, 5363624), (7, 3064928), (8, 2681812), (14, 1532464), (16, 1340906), (19, 1129184), (28, 766232), (32, 670453), (38, 564592), (56, 383116), (71, 302176), (76, 282296), (112, 191558), (133, 161312), (142, 151088), (152, 141148), (224, 95779), (266, 80656), (284, 75544), (304, 70574), (497, 43168), (532, 40328), (568, 37772), (608, 35287), (994, 21584), (1064, 20164), (1136, 18886), (1349, 15904), (1988, 10792), (2128, 10082), (2272, 9443), (2698, 7952), (3976, 5396), (4256, 5041)]