218686713

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{3491}}^1$

素因数の和:3677

約数の個数: 32

約数和(自身を含む): 353111040

約数和(自身を除く): 134424327

約数列:

[1, 3, 7, 19, 21, 57, 133, 157, 399, 471, 1099, 2983, 3297, 3491, 8949, 10473, 20881, 24437, 62643, 66329, 73311, 198987, 464303, 548087, 1392909, 1644261, 3836609, 10413653, 11509827, 31240959, 72895571, 218686713]

約数ペア:

[(1, 218686713), (3, 72895571), (7, 31240959), (19, 11509827), (21, 10413653), (57, 3836609), (133, 1644261), (157, 1392909), (399, 548087), (471, 464303), (1099, 198987), (2983, 73311), (3297, 66329), (3491, 62643), (8949, 24437), (10473, 20881)]