18875960

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1051}}^1$

素因数の和:1511

約数の個数: 32

約数和(自身を含む): 42606000

約数和(自身を除く): 23730040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1051, 1796, 2102, 2245, 3592, 4204, 4490, 5255, 8408, 8980, 10510, 17960, 21020, 42040, 471899, 943798, 1887596, 2359495, 3775192, 4718990, 9437980, 18875960]

約数ペア:

[(1, 18875960), (2, 9437980), (4, 4718990), (5, 3775192), (8, 2359495), (10, 1887596), (20, 943798), (40, 471899), (449, 42040), (898, 21020), (1051, 17960), (1796, 10510), (2102, 8980), (2245, 8408), (3592, 5255), (4204, 4490)]