18921356

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{739}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 34250160

約数和(自身を除く): 15328804

約数列:

[1, 2, 4, 37, 74, 148, 173, 346, 692, 739, 1478, 2956, 6401, 12802, 25604, 27343, 54686, 109372, 127847, 255694, 511388, 4730339, 9460678, 18921356]

約数ペア:

[(1, 18921356), (2, 9460678), (4, 4730339), (37, 511388), (74, 255694), (148, 127847), (173, 109372), (346, 54686), (692, 27343), (739, 25604), (1478, 12802), (2956, 6401)]