21519904

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4177}}^1$

素因数の和:4217

約数の個数: 48

約数和(自身を含む): 50537088

約数和(自身を除く): 29017184

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 184, 224, 322, 368, 644, 736, 1288, 2576, 4177, 5152, 8354, 16708, 29239, 33416, 58478, 66832, 96071, 116956, 133664, 192142, 233912, 384284, 467824, 672497, 768568, 935648, 1344994, 1537136, 2689988, 3074272, 5379976, 10759952, 21519904]

約数ペア:

[(1, 21519904), (2, 10759952), (4, 5379976), (7, 3074272), (8, 2689988), (14, 1537136), (16, 1344994), (23, 935648), (28, 768568), (32, 672497), (46, 467824), (56, 384284), (92, 233912), (112, 192142), (161, 133664), (184, 116956), (224, 96071), (322, 66832), (368, 58478), (644, 33416), (736, 29239), (1288, 16708), (2576, 8354), (4177, 5152)]