21228605

素因数分解:

$5^1\times {\mathrm{19}}^3\times {\mathrm{619}}^1$

素因数の和:681

約数の個数: 16

約数和(自身を含む): 26932800

約数和(自身を除く): 5704195

約数列:

[1, 5, 19, 95, 361, 619, 1805, 3095, 6859, 11761, 34295, 58805, 223459, 1117295, 4245721, 21228605]

約数ペア:

[(1, 21228605), (5, 4245721), (19, 1117295), (95, 223459), (361, 58805), (619, 34295), (1805, 11761), (3095, 6859)]