21249011

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{811}}^1$

素因数の和:1034

約数の個数: 16

約数和(自身を含む): 25724160

約数和(自身を除く): 4475149

約数列:

[1, 7, 19, 133, 197, 811, 1379, 3743, 5677, 15409, 26201, 107863, 159767, 1118369, 3035573, 21249011]

約数ペア:

[(1, 21249011), (7, 3035573), (19, 1118369), (133, 159767), (197, 107863), (811, 26201), (1379, 15409), (3743, 5677)]