19990770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1279}}^1$

素因数の和:1810

約数の個数: 32

約数和(自身を含む): 48107520

約数和(自身を除く): 28116750

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 521, 1042, 1279, 1563, 2558, 2605, 3126, 3837, 5210, 6395, 7674, 7815, 12790, 15630, 19185, 38370, 666359, 1332718, 1999077, 3331795, 3998154, 6663590, 9995385, 19990770]

約数ペア:

[(1, 19990770), (2, 9995385), (3, 6663590), (5, 3998154), (6, 3331795), (10, 1999077), (15, 1332718), (30, 666359), (521, 38370), (1042, 19185), (1279, 15630), (1563, 12790), (2558, 7815), (2605, 7674), (3126, 6395), (3837, 5210)]