20931407

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{467}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 25309440

約数和(自身を除く): 4378033

約数列:

[1, 7, 19, 133, 337, 467, 2359, 3269, 6403, 8873, 44821, 62111, 157379, 1101653, 2990201, 20931407]

約数ペア:

[(1, 20931407), (7, 2990201), (19, 1101653), (133, 157379), (337, 62111), (467, 44821), (2359, 8873), (3269, 6403)]