21194480

素因数分解:

$2^4\times 5^1\times {\mathrm{264931}}^1$

素因数の和:264944

約数の個数: 20

約数和(自身を含む): 49277352

約数和(自身を除く): 28082872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264931, 529862, 1059724, 1324655, 2119448, 2649310, 4238896, 5298620, 10597240, 21194480]

約数ペア:

[(1, 21194480), (2, 10597240), (4, 5298620), (5, 4238896), (8, 2649310), (10, 2119448), (16, 1324655), (20, 1059724), (40, 529862), (80, 264931)]