18489964

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{2153}}^1$

素因数の和:2289

約数の個数: 24

約数和(自身を含む): 34377840

約数和(自身を除く): 15887876

約数列:

[1, 2, 4, 19, 38, 76, 113, 226, 452, 2147, 2153, 4294, 4306, 8588, 8612, 40907, 81814, 163628, 243289, 486578, 973156, 4622491, 9244982, 18489964]

約数ペア:

[(1, 18489964), (2, 9244982), (4, 4622491), (19, 973156), (38, 486578), (76, 243289), (113, 163628), (226, 81814), (452, 40907), (2147, 8612), (2153, 8588), (4294, 4306)]