21455745

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{577}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 35845248

約数和(自身を除く): 14389503

約数列:

[1, 3, 5, 15, 37, 67, 111, 185, 201, 335, 555, 577, 1005, 1731, 2479, 2885, 7437, 8655, 12395, 21349, 37185, 38659, 64047, 106745, 115977, 193295, 320235, 579885, 1430383, 4291149, 7151915, 21455745]

約数ペア:

[(1, 21455745), (3, 7151915), (5, 4291149), (15, 1430383), (37, 579885), (67, 320235), (111, 193295), (185, 115977), (201, 106745), (335, 64047), (555, 38659), (577, 37185), (1005, 21349), (1731, 12395), (2479, 8655), (2885, 7437)]