388379720

素因数分解:

$2^3\times 5^1\times {\mathrm{9709493}}^1$

素因数の和:9709504

約数の個数: 16

約数和(自身を含む): 873854460

約数和(自身を除く): 485474740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9709493, 19418986, 38837972, 48547465, 77675944, 97094930, 194189860, 388379720]

約数ペア:

[(1, 388379720), (2, 194189860), (4, 97094930), (5, 77675944), (8, 48547465), (10, 38837972), (20, 19418986), (40, 9709493)]