21428007

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{6271}}^1$

素因数の和:6358

約数の個数: 16

約数和(自身を含む): 30707712

約数和(自身を除く): 9279705

約数列:

[1, 3, 17, 51, 67, 201, 1139, 3417, 6271, 18813, 106607, 319821, 420157, 1260471, 7142669, 21428007]

約数ペア:

[(1, 21428007), (3, 7142669), (17, 1260471), (51, 420157), (67, 319821), (201, 106607), (1139, 18813), (3417, 6271)]