155420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:437

約数の個数: 24

約数和(自身を含む): 344400

約数和(自身を除く): 188980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 409, 818, 1636, 2045, 4090, 7771, 8180, 15542, 31084, 38855, 77710, 155420]

約数ペア:

[(1, 155420), (2, 77710), (4, 38855), (5, 31084), (10, 15542), (19, 8180), (20, 7771), (38, 4090), (76, 2045), (95, 1636), (190, 818), (380, 409)]