18528340

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{857}}^1$

素因数の和:936

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 22985132

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 857, 940, 1081, 1714, 2162, 3428, 4285, 4324, 5405, 8570, 10810, 17140, 19711, 21620, 39422, 40279, 78844, 80558, 98555, 161116, 197110, 201395, 394220, 402790, 805580, 926417, 1852834, 3705668, 4632085, 9264170, 18528340]

約数ペア:

[(1, 18528340), (2, 9264170), (4, 4632085), (5, 3705668), (10, 1852834), (20, 926417), (23, 805580), (46, 402790), (47, 394220), (92, 201395), (94, 197110), (115, 161116), (188, 98555), (230, 80558), (235, 78844), (460, 40279), (470, 39422), (857, 21620), (940, 19711), (1081, 17140), (1714, 10810), (2162, 8570), (3428, 5405), (4285, 4324)]