21213018

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27407}}^1$

素因数の和:27458

約数の個数: 24

約数和(自身を含む): 47032128

約数和(自身を除く): 25819110

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27407, 54814, 82221, 164442, 246663, 493326, 1178501, 2357002, 3535503, 7071006, 10606509, 21213018]

約数ペア:

[(1, 21213018), (2, 10606509), (3, 7071006), (6, 3535503), (9, 2357002), (18, 1178501), (43, 493326), (86, 246663), (129, 164442), (258, 82221), (387, 54814), (774, 27407)]