18936291

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 29283840

約数和(自身を除く): 10347549

約数列:

[1, 3, 11, 23, 33, 61, 69, 183, 253, 409, 671, 759, 1227, 1403, 2013, 4209, 4499, 9407, 13497, 15433, 24949, 28221, 46299, 74847, 103477, 274439, 310431, 573827, 823317, 1721481, 6312097, 18936291]

約数ペア:

[(1, 18936291), (3, 6312097), (11, 1721481), (23, 823317), (33, 573827), (61, 310431), (69, 274439), (183, 103477), (253, 74847), (409, 46299), (671, 28221), (759, 24949), (1227, 15433), (1403, 13497), (2013, 9407), (4209, 4499)]