21220435

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1607}}^1$

素因数の和:1770

約数の個数: 16

約数和(自身を含む): 27014400

約数和(自身を除く): 5793965

約数列:

[1, 5, 19, 95, 139, 695, 1607, 2641, 8035, 13205, 30533, 152665, 223373, 1116865, 4244087, 21220435]

約数ペア:

[(1, 21220435), (5, 4244087), (19, 1116865), (95, 223373), (139, 152665), (695, 30533), (1607, 13205), (2641, 8035)]