405132020

素因数分解:

$2^2\times 5^1\times {\mathrm{4993}}^1\times {\mathrm{4057}}^1$

素因数の和:9059

約数の個数: 24

約数和(自身を含む): 851157384

約数和(自身を除く): 446025364

約数列:

[1, 2, 4, 5, 10, 20, 4057, 4993, 8114, 9986, 16228, 19972, 20285, 24965, 40570, 49930, 81140, 99860, 20256601, 40513202, 81026404, 101283005, 202566010, 405132020]

約数ペア:

[(1, 405132020), (2, 202566010), (4, 101283005), (5, 81026404), (10, 40513202), (20, 20256601), (4057, 99860), (4993, 81140), (8114, 49930), (9986, 40570), (16228, 24965), (19972, 20285)]