21156130

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^2\times {\mathrm{397}}^1$

素因数の和:550

約数の個数: 24

約数和(自身を含む): 38707092

約数和(自身を除く): 17550962

約数列:

[1, 2, 5, 10, 73, 146, 365, 397, 730, 794, 1985, 3970, 5329, 10658, 26645, 28981, 53290, 57962, 144905, 289810, 2115613, 4231226, 10578065, 21156130]

約数ペア:

[(1, 21156130), (2, 10578065), (5, 4231226), (10, 2115613), (73, 289810), (146, 144905), (365, 57962), (397, 53290), (730, 28981), (794, 26645), (1985, 10658), (3970, 5329)]