21509445

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 14415675

約数列:

[1, 3, 5, 15, 29, 87, 145, 197, 251, 435, 591, 753, 985, 1255, 2955, 3765, 5713, 7279, 17139, 21837, 28565, 36395, 49447, 85695, 109185, 148341, 247235, 741705, 1433963, 4301889, 7169815, 21509445]

約数ペア:

[(1, 21509445), (3, 7169815), (5, 4301889), (15, 1433963), (29, 741705), (87, 247235), (145, 148341), (197, 109185), (251, 85695), (435, 49447), (591, 36395), (753, 28565), (985, 21837), (1255, 17139), (2955, 7279), (3765, 5713)]