81507021

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{1321}}^1$

素因数の和:1612

約数の個数: 16

約数和(自身を含む): 110286528

約数和(自身を除く): 28779507

約数列:

[1, 3, 131, 157, 393, 471, 1321, 3963, 20567, 61701, 173051, 207397, 519153, 622191, 27169007, 81507021]

約数ペア:

[(1, 81507021), (3, 27169007), (131, 622191), (157, 519153), (393, 207397), (471, 173051), (1321, 61701), (3963, 20567)]