8700980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{991}}^1$

素因数の和:1439

約数の個数: 24

約数和(自身を含む): 18332160

約数和(自身を除く): 9631180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 991, 1756, 1982, 2195, 3964, 4390, 4955, 8780, 9910, 19820, 435049, 870098, 1740196, 2175245, 4350490, 8700980]

約数ペア:

[(1, 8700980), (2, 4350490), (4, 2175245), (5, 1740196), (10, 870098), (20, 435049), (439, 19820), (878, 9910), (991, 8780), (1756, 4955), (1982, 4390), (2195, 3964)]