19379440

素因数分解:

$2^4\times 5^1\times {\mathrm{242243}}^1$

素因数の和:242256

約数の個数: 20

約数和(自身を含む): 45057384

約数和(自身を除く): 25677944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242243, 484486, 968972, 1211215, 1937944, 2422430, 3875888, 4844860, 9689720, 19379440]

約数ペア:

[(1, 19379440), (2, 9689720), (4, 4844860), (5, 3875888), (8, 2422430), (10, 1937944), (16, 1211215), (20, 968972), (40, 484486), (80, 242243)]