1664505855

素因数分解:

$3^4\times 5^1\times {\mathrm{4109891}}^1$

素因数の和:4109908

約数の個数: 20

約数和(自身を含む): 2983781592

約数和(自身を除く): 1319275737

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4109891, 12329673, 20549455, 36989019, 61648365, 110967057, 184945095, 332901171, 554835285, 1664505855]

約数ペア:

[(1, 1664505855), (3, 554835285), (5, 332901171), (9, 184945095), (15, 110967057), (27, 61648365), (45, 36989019), (81, 20549455), (135, 12329673), (405, 4109891)]