21397893

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{4733}}^1$

素因数の和:4884

約数の個数: 16

約数和(自身を含む): 31358016

約数和(自身を除く): 9960123

約数列:

[1, 3, 11, 33, 137, 411, 1507, 4521, 4733, 14199, 52063, 156189, 648421, 1945263, 7132631, 21397893]

約数ペア:

[(1, 21397893), (3, 7132631), (11, 1945263), (33, 648421), (137, 156189), (411, 52063), (1507, 14199), (4521, 4733)]