20378428

素因数分解:

$2^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{4021}}^1$

素因数の和:4213

約数の個数: 24

約数和(自身を含む): 40992224

約数和(自身を除く): 20613796

約数列:

[1, 2, 4, 7, 14, 28, 181, 362, 724, 1267, 2534, 4021, 5068, 8042, 16084, 28147, 56294, 112588, 727801, 1455602, 2911204, 5094607, 10189214, 20378428]

約数ペア:

[(1, 20378428), (2, 10189214), (4, 5094607), (7, 2911204), (14, 1455602), (28, 727801), (181, 112588), (362, 56294), (724, 28147), (1267, 16084), (2534, 8042), (4021, 5068)]