81508895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{54521}}^1$

素因数の和:54562

約数の個数: 16

約数和(自身を含む): 109916352

約数和(自身を除く): 28407457

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 54521, 272605, 708773, 1253983, 3543865, 6269915, 16301779, 81508895]

約数ペア:

[(1, 81508895), (5, 16301779), (13, 6269915), (23, 3543865), (65, 1253983), (115, 708773), (299, 272605), (1495, 54521)]