1666821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 2428160

約数和(自身を除く): 761339

約数列:

[1, 3, 13, 39, 79, 237, 541, 1027, 1623, 3081, 7033, 21099, 42739, 128217, 555607, 1666821]

約数ペア:

[(1, 1666821), (3, 555607), (13, 128217), (39, 42739), (79, 21099), (237, 7033), (541, 3081), (1027, 1623)]