19391920

素因数分解:

$2^4\times 5^1\times {\mathrm{242399}}^1$

素因数の和:242412

約数の個数: 20

約数和(自身を含む): 45086400

約数和(自身を除く): 25694480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242399, 484798, 969596, 1211995, 1939192, 2423990, 3878384, 4847980, 9695960, 19391920]

約数ペア:

[(1, 19391920), (2, 9695960), (4, 4847980), (5, 3878384), (8, 2423990), (10, 1939192), (16, 1211995), (20, 969596), (40, 484798), (80, 242399)]