20618465

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3659}}^1$

素因数の和:3701

約数の個数: 24

約数和(自身を含む): 30041280

約数和(自身を除く): 9422815

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3659, 5635, 18295, 25613, 84157, 128065, 179291, 420785, 589099, 896455, 2945495, 4123693, 20618465]

約数ペア:

[(1, 20618465), (5, 4123693), (7, 2945495), (23, 896455), (35, 589099), (49, 420785), (115, 179291), (161, 128065), (245, 84157), (805, 25613), (1127, 18295), (3659, 5635)]