18697045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 6646955

約数列:

[1, 5, 19, 23, 43, 95, 115, 199, 215, 437, 817, 989, 995, 2185, 3781, 4085, 4577, 4945, 8557, 18791, 18905, 22885, 42785, 86963, 93955, 162583, 196811, 434815, 812915, 984055, 3739409, 18697045]

約数ペア:

[(1, 18697045), (5, 3739409), (19, 984055), (23, 812915), (43, 434815), (95, 196811), (115, 162583), (199, 93955), (215, 86963), (437, 42785), (817, 22885), (989, 18905), (995, 18791), (2185, 8557), (3781, 4945), (4085, 4577)]