18712455

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{743}}^1$

素因数の和:847

約数の個数: 32

約数和(自身を含む): 31712256

約数和(自身を除く): 12999801

約数列:

[1, 3, 5, 15, 23, 69, 73, 115, 219, 345, 365, 743, 1095, 1679, 2229, 3715, 5037, 8395, 11145, 17089, 25185, 51267, 54239, 85445, 162717, 256335, 271195, 813585, 1247497, 3742491, 6237485, 18712455]

約数ペア:

[(1, 18712455), (3, 6237485), (5, 3742491), (15, 1247497), (23, 813585), (69, 271195), (73, 256335), (115, 162717), (219, 85445), (345, 54239), (365, 51267), (743, 25185), (1095, 17089), (1679, 11145), (2229, 8395), (3715, 5037)]