19197980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2659}}^1$

素因数の和:2706

約数の個数: 36

約数和(自身を含む): 42565320

約数和(自身を除く): 23367340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2659, 3610, 5318, 7220, 10636, 13295, 26590, 50521, 53180, 101042, 202084, 252605, 505210, 959899, 1010420, 1919798, 3839596, 4799495, 9598990, 19197980]

約数ペア:

[(1, 19197980), (2, 9598990), (4, 4799495), (5, 3839596), (10, 1919798), (19, 1010420), (20, 959899), (38, 505210), (76, 252605), (95, 202084), (190, 101042), (361, 53180), (380, 50521), (722, 26590), (1444, 13295), (1805, 10636), (2659, 7220), (3610, 5318)]