20996521

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{1289}}^1$

素因数の和:1488

約数の個数: 16

約数和(自身を含む): 26006400

約数和(自身を除く): 5009879

約数列:

[1, 7, 13, 91, 179, 1253, 1289, 2327, 9023, 16289, 16757, 117299, 230731, 1615117, 2999503, 20996521]

約数ペア:

[(1, 20996521), (7, 2999503), (13, 1615117), (91, 230731), (179, 117299), (1253, 16757), (1289, 16289), (2327, 9023)]