19947578

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61949}}^1$

素因数の和:61981

約数の個数: 16

約数和(自身を含む): 35683200

約数和(自身を除く): 15735622

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 61949, 123898, 433643, 867286, 1424827, 2849654, 9973789, 19947578]

約数ペア:

[(1, 19947578), (2, 9973789), (7, 2849654), (14, 1424827), (23, 867286), (46, 433643), (161, 123898), (322, 61949)]