217027990

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{54667}}^1$

素因数の和:55071

約数の個数: 16

約数和(自身を含む): 391641552

約数和(自身を除く): 174613562

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 54667, 109334, 273335, 546670, 21702799, 43405598, 108513995, 217027990]

約数ペア:

[(1, 217027990), (2, 108513995), (5, 43405598), (10, 21702799), (397, 546670), (794, 273335), (1985, 109334), (3970, 54667)]