21186659

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1$

素因数の和:458

約数の個数: 16

約数和(自身を含む): 23595264

約数和(自身を除く): 2408605

約数列:

[1, 13, 43, 151, 251, 559, 1963, 3263, 6493, 10793, 37901, 84409, 140309, 492713, 1629743, 21186659]

約数ペア:

[(1, 21186659), (13, 1629743), (43, 492713), (151, 140309), (251, 84409), (559, 37901), (1963, 10793), (3263, 6493)]