21701560

素因数分解:

$2^3\times 5^1\times {\mathrm{542539}}^1$

素因数の和:542550

約数の個数: 16

約数和(自身を含む): 48828600

約数和(自身を除く): 27127040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542539, 1085078, 2170156, 2712695, 4340312, 5425390, 10850780, 21701560]

約数ペア:

[(1, 21701560), (2, 10850780), (4, 5425390), (5, 4340312), (8, 2712695), (10, 2170156), (20, 1085078), (40, 542539)]