12640809

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{4201}}^1$

素因数の和:4280

約数の個数: 16

約数和(自身を含む): 18152640

約数和(自身を除く): 5511831

約数列:

[1, 3, 17, 51, 59, 177, 1003, 3009, 4201, 12603, 71417, 214251, 247859, 743577, 4213603, 12640809]

約数ペア:

[(1, 12640809), (3, 4213603), (17, 743577), (51, 247859), (59, 214251), (177, 71417), (1003, 12603), (3009, 4201)]