20815179

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{359}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 14021301

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 251, 359, 753, 1077, 1757, 2513, 2761, 3949, 5271, 7539, 8283, 11847, 19327, 27643, 57981, 82929, 90109, 270327, 630763, 991199, 1892289, 2973597, 6938393, 20815179]

約数ペア:

[(1, 20815179), (3, 6938393), (7, 2973597), (11, 1892289), (21, 991199), (33, 630763), (77, 270327), (231, 90109), (251, 82929), (359, 57981), (753, 27643), (1077, 19327), (1757, 11847), (2513, 8283), (2761, 7539), (3949, 5271)]