21199976

素因数分解:

$2^3\times 7^1\times {\mathrm{378571}}^1$

素因数の和:378584

約数の個数: 16

約数和(自身を含む): 45428640

約数和(自身を除く): 24228664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378571, 757142, 1514284, 2649997, 3028568, 5299994, 10599988, 21199976]

約数ペア:

[(1, 21199976), (2, 10599988), (4, 5299994), (7, 3028568), (8, 2649997), (14, 1514284), (28, 757142), (56, 378571)]