18800728

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{691}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 37368000

約数和(自身を除く): 18567272

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 179, 358, 691, 716, 1382, 1432, 2764, 3401, 5528, 6802, 13129, 13604, 26258, 27208, 52516, 105032, 123689, 247378, 494756, 989512, 2350091, 4700182, 9400364, 18800728]

約数ペア:

[(1, 18800728), (2, 9400364), (4, 4700182), (8, 2350091), (19, 989512), (38, 494756), (76, 247378), (152, 123689), (179, 105032), (358, 52516), (691, 27208), (716, 26258), (1382, 13604), (1432, 13129), (2764, 6802), (3401, 5528)]