21092560

素因数分解:

$2^4\times 5^1\times {\mathrm{263657}}^1$

素因数の和:263670

約数の個数: 20

約数和(自身を含む): 49040388

約数和(自身を除く): 27947828

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263657, 527314, 1054628, 1318285, 2109256, 2636570, 4218512, 5273140, 10546280, 21092560]

約数ペア:

[(1, 21092560), (2, 10546280), (4, 5273140), (5, 4218512), (8, 2636570), (10, 2109256), (16, 1318285), (20, 1054628), (40, 527314), (80, 263657)]