21099560

素因数分解:

$2^3\times 5^1\times {\mathrm{527489}}^1$

素因数の和:527500

約数の個数: 16

約数和(自身を含む): 47474100

約数和(自身を除く): 26374540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 527489, 1054978, 2109956, 2637445, 4219912, 5274890, 10549780, 21099560]

約数ペア:

[(1, 21099560), (2, 10549780), (4, 5274890), (5, 4219912), (8, 2637445), (10, 2109956), (20, 1054978), (40, 527489)]