21620989

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{433}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 24498432

約数和(自身を除く): 2877443

約数列:

[1, 13, 23, 167, 299, 433, 2171, 3841, 5629, 9959, 49933, 72311, 129467, 940043, 1663153, 21620989]

約数ペア:

[(1, 21620989), (13, 1663153), (23, 940043), (167, 129467), (299, 72311), (433, 49933), (2171, 9959), (3841, 5629)]