12539960

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1249}}^1$

素因数の和:1511

約数の個数: 32

約数和(自身を含む): 28350000

約数和(自身を除く): 15810040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1249, 1255, 2008, 2498, 2510, 4996, 5020, 6245, 9992, 10040, 12490, 24980, 49960, 313499, 626998, 1253996, 1567495, 2507992, 3134990, 6269980, 12539960]

約数ペア:

[(1, 12539960), (2, 6269980), (4, 3134990), (5, 2507992), (8, 1567495), (10, 1253996), (20, 626998), (40, 313499), (251, 49960), (502, 24980), (1004, 12490), (1249, 10040), (1255, 9992), (2008, 6245), (2498, 5020), (2510, 4996)]