221975920

素因数分解:

$2^4\times 5^1\times {\mathrm{2774699}}^1$

素因数の和:2774712

約数の個数: 20

約数和(自身を含む): 516094200

約数和(自身を除く): 294118280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2774699, 5549398, 11098796, 13873495, 22197592, 27746990, 44395184, 55493980, 110987960, 221975920]

約数ペア:

[(1, 221975920), (2, 110987960), (4, 55493980), (5, 44395184), (8, 27746990), (10, 22197592), (16, 13873495), (20, 11098796), (40, 5549398), (80, 2774699)]