638040100

素因数分解:

$2^2\times 5^2\times {\mathrm{6380401}}^1$

素因数の和:6380415

約数の個数: 18

約数和(自身を含む): 1384547234

約数和(自身を除く): 746507134

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 6380401, 12760802, 25521604, 31902005, 63804010, 127608020, 159510025, 319020050, 638040100]

約数ペア:

[(1, 638040100), (2, 319020050), (4, 159510025), (5, 127608020), (10, 63804010), (20, 31902005), (25, 25521604), (50, 12760802), (100, 6380401)]