18271700

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2053}}^1$

素因数の和:2156

約数の個数: 36

約数和(自身を含む): 40114620

約数和(自身を除く): 21842920

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2053, 2225, 4106, 4450, 8212, 8900, 10265, 20530, 41060, 51325, 102650, 182717, 205300, 365434, 730868, 913585, 1827170, 3654340, 4567925, 9135850, 18271700]

約数ペア:

[(1, 18271700), (2, 9135850), (4, 4567925), (5, 3654340), (10, 1827170), (20, 913585), (25, 730868), (50, 365434), (89, 205300), (100, 182717), (178, 102650), (356, 51325), (445, 41060), (890, 20530), (1780, 10265), (2053, 8900), (2225, 8212), (4106, 4450)]