178540940

素因数分解:

$2^2\times 5^1\times {\mathrm{2099}}^1\times {\mathrm{4253}}^1$

素因数の和:6361

約数の個数: 24

約数和(自身を含む): 375202800

約数和(自身を除く): 196661860

約数列:

[1, 2, 4, 5, 10, 20, 2099, 4198, 4253, 8396, 8506, 10495, 17012, 20990, 21265, 41980, 42530, 85060, 8927047, 17854094, 35708188, 44635235, 89270470, 178540940]

約数ペア:

[(1, 178540940), (2, 89270470), (4, 44635235), (5, 35708188), (10, 17854094), (20, 8927047), (2099, 85060), (4198, 42530), (4253, 41980), (8396, 21265), (8506, 20990), (10495, 17012)]