21187777

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1307}}^1$

素因数の和:1392

約数の個数: 16

約数和(自身を含む): 24171840

約数和(自身を除く): 2984063

約数列:

[1, 13, 29, 43, 377, 559, 1247, 1307, 16211, 16991, 37903, 56201, 492739, 730613, 1629829, 21187777]

約数ペア:

[(1, 21187777), (13, 1629829), (29, 730613), (43, 492739), (377, 56201), (559, 37903), (1247, 16991), (1307, 16211)]