20187945

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2971}}^1$

素因数の和:3133

約数の個数: 24

約数和(自身を含む): 35236032

約数和(自身を除く): 15048087

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 2971, 6795, 8913, 14855, 26739, 44565, 133695, 448621, 1345863, 2243105, 4037589, 6729315, 20187945]

約数ペア:

[(1, 20187945), (3, 6729315), (5, 4037589), (9, 2243105), (15, 1345863), (45, 448621), (151, 133695), (453, 44565), (755, 26739), (1359, 14855), (2265, 8913), (2971, 6795)]