81198325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{577}}^1$

素因数の和:1033

約数の個数: 24

約数和(自身を含む): 108869768

約数和(自身を除く): 27671443

約数列:

[1, 5, 13, 25, 65, 325, 433, 577, 2165, 2885, 5629, 7501, 10825, 14425, 28145, 37505, 140725, 187525, 249841, 1249205, 3247933, 6246025, 16239665, 81198325]

約数ペア:

[(1, 81198325), (5, 16239665), (13, 6246025), (25, 3247933), (65, 1249205), (325, 249841), (433, 187525), (577, 140725), (2165, 37505), (2885, 28145), (5629, 14425), (7501, 10825)]