408020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:919

約数の個数: 24

約数和(自身を含む): 895104

約数和(自身を除く): 487084

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 887, 1774, 3548, 4435, 8870, 17740, 20401, 40802, 81604, 102005, 204010, 408020]

約数ペア:

[(1, 408020), (2, 204010), (4, 102005), (5, 81604), (10, 40802), (20, 20401), (23, 17740), (46, 8870), (92, 4435), (115, 3548), (230, 1774), (460, 887)]