18013945

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 23450688

約数和(自身を除く): 5436743

約数列:

[1, 5, 23, 31, 115, 155, 163, 713, 815, 961, 3565, 3749, 4805, 5053, 18745, 22103, 25265, 110515, 116219, 156643, 581095, 783215, 3602789, 18013945]

約数ペア:

[(1, 18013945), (5, 3602789), (23, 783215), (31, 581095), (115, 156643), (155, 116219), (163, 110515), (713, 25265), (815, 22103), (961, 18745), (3565, 5053), (3749, 4805)]