18178809

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 28283904

約数和(自身を除く): 10105095

約数列:

[1, 3, 11, 23, 33, 43, 69, 129, 253, 473, 557, 759, 989, 1419, 1671, 2967, 6127, 10879, 12811, 18381, 23951, 32637, 38433, 71853, 140921, 263461, 422763, 550873, 790383, 1652619, 6059603, 18178809]

約数ペア:

[(1, 18178809), (3, 6059603), (11, 1652619), (23, 790383), (33, 550873), (43, 422763), (69, 263461), (129, 140921), (253, 71853), (473, 38433), (557, 32637), (759, 23951), (989, 18381), (1419, 12811), (1671, 10879), (2967, 6127)]