640179.0000000

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1069}}^1$

素因数の和:1155

約数の個数: 24

約数和(自身を含む): 13242320

約数和(自身を除く): 4862429

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 1069, 2613, 3207, 7839, 9621, 13897, 41691, 71623, 125073, 214869, 644607, 931099, 2793297, 8379891]

約数ペア:

[(1, 8379891), (3, 2793297), (9, 931099), (13, 644607), (39, 214869), (67, 125073), (117, 71623), (201, 41691), (603, 13897), (871, 9621), (1069, 7839), (2613, 3207)]