389561360

素因数分解:

$2^4\times 5^1\times {\mathrm{4869517}}^1$

素因数の和:4869530

約数の個数: 20

約数和(自身を含む): 905730348

約数和(自身を除く): 516168988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4869517, 9739034, 19478068, 24347585, 38956136, 48695170, 77912272, 97390340, 194780680, 389561360]

約数ペア:

[(1, 389561360), (2, 194780680), (4, 97390340), (5, 77912272), (8, 48695170), (10, 38956136), (16, 24347585), (20, 19478068), (40, 9739034), (80, 4869517)]