21285445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3527}}^1$

素因数の和:3620

約数の個数: 16

約数和(自身を含む): 27433728

約数和(自身を除く): 6148283

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3527, 6035, 17635, 59959, 250417, 299795, 1252085, 4257089, 21285445]

約数ペア:

[(1, 21285445), (5, 4257089), (17, 1252085), (71, 299795), (85, 250417), (355, 59959), (1207, 17635), (3527, 6035)]