19171220

素因数分解:

$2^2\times 5^1\times {\mathrm{877}}^1\times {\mathrm{1093}}^1$

素因数の和:1979

約数の個数: 24

約数和(自身を含む): 40342344

約数和(自身を除く): 21171124

約数列:

[1, 2, 4, 5, 10, 20, 877, 1093, 1754, 2186, 3508, 4372, 4385, 5465, 8770, 10930, 17540, 21860, 958561, 1917122, 3834244, 4792805, 9585610, 19171220]

約数ペア:

[(1, 19171220), (2, 9585610), (4, 4792805), (5, 3834244), (10, 1917122), (20, 958561), (877, 21860), (1093, 17540), (1754, 10930), (2186, 8770), (3508, 5465), (4372, 4385)]