21077235

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12659}}^1$

素因数の和:12707

約数の個数: 24

約数和(自身を含む): 37524240

約数和(自身を除く): 16447005

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12659, 37977, 63295, 113931, 189885, 468383, 569655, 1405149, 2341915, 4215447, 7025745, 21077235]

約数ペア:

[(1, 21077235), (3, 7025745), (5, 4215447), (9, 2341915), (15, 1405149), (37, 569655), (45, 468383), (111, 189885), (185, 113931), (333, 63295), (555, 37977), (1665, 12659)]