18994120

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3739}}^1$

素因数の和:3877

約数の個数: 32

約数和(自身を含む): 43084800

約数和(自身を除く): 24090680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 3739, 5080, 7478, 14956, 18695, 29912, 37390, 74780, 149560, 474853, 949706, 1899412, 2374265, 3798824, 4748530, 9497060, 18994120]

約数ペア:

[(1, 18994120), (2, 9497060), (4, 4748530), (5, 3798824), (8, 2374265), (10, 1899412), (20, 949706), (40, 474853), (127, 149560), (254, 74780), (508, 37390), (635, 29912), (1016, 18695), (1270, 14956), (2540, 7478), (3739, 5080)]