21000724503

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{1296101}}^1$

素因数の和:1296606

約数の個数: 16

約数和(自身を含む): 30608744832

約数和(自身を除く): 9608020329

約数列:

[1, 3, 11, 33, 491, 1473, 5401, 16203, 1296101, 3888303, 14257111, 42771333, 636385591, 1909156773, 7000241501, 21000724503]

約数ペア:

[(1, 21000724503), (3, 7000241501), (11, 1909156773), (33, 636385591), (491, 42771333), (1473, 14257111), (5401, 3888303), (16203, 1296101)]