389827720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{183881}}^1$

素因数の和:183945

約数の個数: 32

約数和(自身を含む): 893666520

約数和(自身を除く): 503838800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 183881, 367762, 735524, 919405, 1471048, 1838810, 3677620, 7355240, 9745693, 19491386, 38982772, 48728465, 77965544, 97456930, 194913860, 389827720]

約数ペア:

[(1, 389827720), (2, 194913860), (4, 97456930), (5, 77965544), (8, 48728465), (10, 38982772), (20, 19491386), (40, 9745693), (53, 7355240), (106, 3677620), (212, 1838810), (265, 1471048), (424, 919405), (530, 735524), (1060, 367762), (2120, 183881)]