18204431

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 22900320

約数和(自身を除く): 4695889

約数列:

[1, 7, 23, 29, 49, 161, 203, 557, 667, 1127, 1421, 3899, 4669, 12811, 16153, 27293, 32683, 89677, 113071, 371519, 627739, 791497, 2600633, 18204431]

約数ペア:

[(1, 18204431), (7, 2600633), (23, 791497), (29, 627739), (49, 371519), (161, 113071), (203, 89677), (557, 32683), (667, 27293), (1127, 16153), (1421, 12811), (3899, 4669)]