17401960

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{991}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 39283200

約数和(自身を除く): 21881240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 991, 1756, 1982, 2195, 3512, 3964, 4390, 4955, 7928, 8780, 9910, 17560, 19820, 39640, 435049, 870098, 1740196, 2175245, 3480392, 4350490, 8700980, 17401960]

約数ペア:

[(1, 17401960), (2, 8700980), (4, 4350490), (5, 3480392), (8, 2175245), (10, 1740196), (20, 870098), (40, 435049), (439, 39640), (878, 19820), (991, 17560), (1756, 9910), (1982, 8780), (2195, 7928), (3512, 4955), (3964, 4390)]