644675624

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{21313}}^1$

素因数の和:21537

約数の個数: 32

約数和(自身を含む): 1278840000

約数和(自身を除く): 634164376

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 199, 398, 796, 1592, 3781, 7562, 15124, 21313, 30248, 42626, 85252, 170504, 404947, 809894, 1619788, 3239576, 4241287, 8482574, 16965148, 33930296, 80584453, 161168906, 322337812, 644675624]

約数ペア:

[(1, 644675624), (2, 322337812), (4, 161168906), (8, 80584453), (19, 33930296), (38, 16965148), (76, 8482574), (152, 4241287), (199, 3239576), (398, 1619788), (796, 809894), (1592, 404947), (3781, 170504), (7562, 85252), (15124, 42626), (21313, 30248)]