19427500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:452

約数の個数: 60

約数和(自身を含む): 44829400

約数和(自身を除く): 25401900

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 409, 475, 500, 625, 818, 950, 1250, 1636, 1900, 2045, 2375, 2500, 4090, 4750, 7771, 8180, 9500, 10225, 11875, 15542, 20450, 23750, 31084, 38855, 40900, 47500, 51125, 77710, 102250, 155420, 194275, 204500, 255625, 388550, 511250, 777100, 971375, 1022500, 1942750, 3885500, 4856875, 9713750, 19427500]

約数ペア:

[(1, 19427500), (2, 9713750), (4, 4856875), (5, 3885500), (10, 1942750), (19, 1022500), (20, 971375), (25, 777100), (38, 511250), (50, 388550), (76, 255625), (95, 204500), (100, 194275), (125, 155420), (190, 102250), (250, 77710), (380, 51125), (409, 47500), (475, 40900), (500, 38855), (625, 31084), (818, 23750), (950, 20450), (1250, 15542), (1636, 11875), (1900, 10225), (2045, 9500), (2375, 8180), (2500, 7771), (4090, 4750)]