20890168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{200867}}^1$

素因数の和:200886

約数の個数: 16

約数和(自身を含む): 42182280

約数和(自身を除く): 21292112

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 200867, 401734, 803468, 1606936, 2611271, 5222542, 10445084, 20890168]

約数ペア:

[(1, 20890168), (2, 10445084), (4, 5222542), (8, 2611271), (13, 1606936), (26, 803468), (52, 401734), (104, 200867)]