216173678

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{1987}}^1$

素因数の和:2424

約数の個数: 32

約数和(自身を含む): 391238400

約数和(自身を除く): 175064722

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 409, 818, 1987, 2863, 3974, 5726, 7771, 13909, 15542, 27818, 37753, 54397, 75506, 108794, 264271, 528542, 812683, 1625366, 5688781, 11377562, 15440977, 30881954, 108086839, 216173678]

約数ペア:

[(1, 216173678), (2, 108086839), (7, 30881954), (14, 15440977), (19, 11377562), (38, 5688781), (133, 1625366), (266, 812683), (409, 528542), (818, 264271), (1987, 108794), (2863, 75506), (3974, 54397), (5726, 37753), (7771, 27818), (13909, 15542)]