21397264

素因数分解:

$2^4\times 7^1\times {\mathrm{191047}}^1$

素因数の和:191062

約数の個数: 20

約数和(自身を含む): 47379904

約数和(自身を除く): 25982640

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 191047, 382094, 764188, 1337329, 1528376, 2674658, 3056752, 5349316, 10698632, 21397264]

約数ペア:

[(1, 21397264), (2, 10698632), (4, 5349316), (7, 3056752), (8, 2674658), (14, 1528376), (16, 1337329), (28, 764188), (56, 382094), (112, 191047)]