19503855

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20639}}^1$

素因数の和:20660

約数の個数: 32

約数和(自身を含む): 39628800

約数和(自身を除く): 20124945

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20639, 61917, 103195, 144473, 185751, 309585, 433419, 557253, 722365, 928755, 1300257, 2167095, 2786265, 3900771, 6501285, 19503855]

約数ペア:

[(1, 19503855), (3, 6501285), (5, 3900771), (7, 2786265), (9, 2167095), (15, 1300257), (21, 928755), (27, 722365), (35, 557253), (45, 433419), (63, 309585), (105, 185751), (135, 144473), (189, 103195), (315, 61917), (945, 20639)]