38978000

素因数分解:

$2^4\times 5^3\times {\mathrm{19489}}^1$

素因数の和:19512

約数の個数: 40

約数和(自身を含む): 94253640

約数和(自身を除く): 55275640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 19489, 38978, 77956, 97445, 155912, 194890, 311824, 389780, 487225, 779560, 974450, 1559120, 1948900, 2436125, 3897800, 4872250, 7795600, 9744500, 19489000, 38978000]

約数ペア:

[(1, 38978000), (2, 19489000), (4, 9744500), (5, 7795600), (8, 4872250), (10, 3897800), (16, 2436125), (20, 1948900), (25, 1559120), (40, 974450), (50, 779560), (80, 487225), (100, 389780), (125, 311824), (200, 194890), (250, 155912), (400, 97445), (500, 77956), (1000, 38978), (2000, 19489)]